here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for seconds as 5-year-old ethan goss he's fallen out of sight in that tree well. >> ethan? winston gaus digs his son out. the boy fighting sef indication. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a milon tiles online as this father us his closos call 0 warn others causing it the m mt frightening experience he's had ass a rent. >> i iemember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, know, for me to pull him out. >> i had a near death experience. >> you never expect something like that to happen to you. but oncet does it's kind of shocking. >> reporter: it's hard to see till you're up close. these branches block so much snow. one step down there you sink another six feet at least. northwest a alanche institute showsust how paralyzing it can

here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for seconds as 15-year-old ethan gossss disappears amidst the trees. he's fallen out of sight in that tree well. >> ethan? winston goss digs his son out. the boy fighting suffocation. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million times online as this father uses his close call to warn others calling it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional it was a true moment, know, for me to pull him out. >> i had a near death experiencece >> you never e eect something like that to happen to you. but once it does it's kind of shocking. >> reporter: it's hard to see till you're right here up close. but these branches block so much snow, it's not -- one step down there you sink another six feet at least. a safety

here's abc's neal karlinksky. with the danger sign. >> hit the jump. hit it! hit it clm! >> reporter: a father and son back country ski outing turning to a heart-pounding fight for seconds as 15-year-old ethan goss disappears amidz the trees. >> are you all right? >> reporter: he's fallen out of sight in the tree well. >> ethan? >> reporter: winston goss digs his son out. the boy fighting suffocation. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million times online as this father uses his close call to warn others calling it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, you know, for me to pull him out. >> i had a near-death experience. >> yeah. >> you never expect something like that to happen to you, but once it does, it's kind of shocking. >> reporter: it's hard to see until you're right here up close. but these branches block so much snow. one step down

here's abc's neal karlinksky. with the danger sign. >> hit the jump. hit it! hit it clm! >> reporter: a father and son back country ski outing turning to a heart-pounding fight for seconds as 15-year-old ethan goss disappears amidz the trees. >> are you all right? >> reporter: he's fallen out of sight in the tree well. >> ethan? >> reporter: winston goss digs his son out. the boy fighting suffocation. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million times online as this father uses his close call to warn others calling it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, you know, >> i had a near-death experience. >> yeah. >> you never expect something like that to happen to you, but once it does, it's kind of shocking. >> reporter: it's hard to see until you're right here up close. but these branches block so much snow. one step down there you sink another s

abc's neal karlinksky now on the deepening mystery. >> reporter: as mysteries go, there aren't many that can match annoying as it is unexplained. [ screeching ] that high-pitched sound reeking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the nearest train track is annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dump & dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief -- i mean, our crew, thought that it was a water -- something in the water system. >> that's that loud out there in the winter? >> yeah. so,

here's abc's neal karlinksky. with the danger sign. >> hit the jump. hit it! hit it clm! >> reporter: a father and son back country ski outing turning to a heart-pounding fight for seconds as 15-year-old ethan >> are you all right? >> reporter: he's fallen out of sight in the tree well. >> ethan? >> reporter: winston goss digs his son out. the boy fighting suffocation. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million times online as this father uses his close call to warn others calling it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, you know, for me to pull him out. >> i had a near-death experience. >> yeah. >> you never expect something like that to happen to you, but once it does, it's kind of shocking. >> reporter: it's hard to see until you're right here up close. but these branches block so much snow. one step down there you sink another six feet a

abc's neal karlinksky now on the deepening mystery. there aren't many that can match this one for being just as annoying as it is unexplained. [ screeching ] that high-pitched sound reeking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the nearest train track is rarely used. >> want to hear the most annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dump & dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. sort of figured it out. and our belief -- i mean, our crew, thought that it was a water -- something in the water system. >

. >> reporter: neal karlinksky, abc news, snoqualmie pass, washington. >> i've got a long list of ski dangers i like to recite. of. >> i love all that fresh powder. that's what i was thinking. >>> coming up, mail carriers are no stranger to danger. >> traditionally it's the occasional nasty dog. it was wild turkeys. that's next. was wild turkeys. >> announcer: "world news wait, oh, yes, wait a minute mr. postman, wai wait oh yes wait just a minute mr. postman >> postal carriers are lauded for their adherence to their unofficial motto. >> yes, neither snow, nor rain nor heat nor gloom of night stays these carriers from their swift completion of their appointed rounds. >> but it doesn't say anything about wild turkeys. >> some people hear roosters. around here we wake up to gobble, gobble. cul-de-sac in hillsdale. if you shoo them they leave, right? >> no, they don't run. >> reporter: which is why we were here in the first place. >> i think that's ridiculous. it's silly. >> reporter: helen is talking about what happened after wild turkeys -- yes, we found them -- surrounded a letter car

abc's neal karlinksky now on the deepening mystery. >> reporter: as mysteries go, there aren't many that can match this one for being just as annoying as it is unexplained. [ screeching ] that high-pitched sound reeking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the nearest train track is rarely used. >> want to hear the most annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dump & funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief -- i mean, our crew, thought that it was a water -- something in the water system. >> that's that loud o

here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning seconds as 5-year-old ethan goss disappears amidst the trees. he's fallen out of sight in that tree well. >> ethan? winston gaus digs his son out. the boy fighting sef indication. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million tiles online as this father us his close call 0 warn others causing it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, know, for me to pull him out. >> i had a near death experience. >> you never expect something like that to happen to you. but once it does it's kind of shocking. >> reporter: it's hard to see till you're up close. these branches block so much snow. another six feet at least. a safety video put out by the northwest avalanche institute shows just how paralyzing

abc's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, there aren't many that can match this one for being just as annoying as it is unexplained. [ screeching ] that high pitched sound, wreaking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the nearest train track is rarely used. >> want to hear the most annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief, i mean our crew water system. >> that that's that loud out there in the winter. >> collec

here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for seconds as 5-year-old ethan goss disappears amidst the trees. he's fallen out of sight in that tree well. >> ethan? winston gaus digs his son out. the boy fighting sef indication. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million tiles online as this father us his close call 0 warn others causing it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, know, for me to pull him out. >> you never expect something like that to happen to you. but once it does it's kind of shocking. >> reporter: it's hard to see till you're up close. these branches block so much snow. one step down there you sink another six feet at least. a safety video put out by the northwest avalanche institute s

abc's neal karlinksky now on >> reporter: as mysteries go, there aren't many that can match this one for being just as [ screeching ] that high pitched sound, wreaking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. rarely used. >> want to hear the most annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief, i mean our crew thought it was something in the water system. >> that that's that loud out there in the winter. >> collect the water system. that's wha

karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for seconds as 5-year-old ethan goss disappears amidst the trees. he's fallen out of sight in that tree well. >> ethan? winston gaus digs his son out. the boy fighting sef indication. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million tiles online as this father us his close call 0 warn others causing it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, know, for me to pull him out. >> i had a near death experience. >> you never expect something like that to happen to you. but once it does it's kind of >> reporter: it's hard to see till you're up close. these branches block so much snow. one step down there you sink another six feet at least. a safety video put out by the northwe

abc's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, there aren't many that can match this one for being just as annoying as it is unexplained. [ screeching ] that high pitched sound, wreaking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the nearest train track is rarely used. >> want to hear the most annoying sound in the world? >> guys, guys, guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief, i mean our crew thought it was something in the water system. >> that that's that lou

here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for seconds as 5-year-old ethan goss disappears amidst the trees. he's fallen out of sight in that tree well. >> ethan? winston gaus digs his son out. the boy fighting sef indication. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million tiles online as this father us his close call 0 warn others causing it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, know, for >> i had a near death experience. >> you never expect something like that to happen to you. but once it does it's kind of shocking. >> reporter: it's hard to see till you're up close. these branches block so much snow. one step down there you sink another six feet at least. a safety video put out by the northwest avalanc

abc's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, there aren't many that can match this one for being just as annoying as it is unexplained. [ screeching ] that high pitched sound, wreaking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, and the nearest train track is rarely used. >> want to hear the most annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief, i mean our crew thought it was something in the water system. >> that that's that loud out t

here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for seconds as 5-year-old ethan goss disappears amidst the trees. he's fallen out of sight in that tree well. >> ethan? winston gaus digs his son out. the boy fighting sef indication. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million tiles online as this father us his close call 0 warn others causing it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, know, for me to pull him out. experience. >> you never expect something like that to happen to you. but once it does it's kind of shocking. >> reporter: it's hard to see till you're up close. these branches block so much snow. one step down there you sink another six feet at least. a safety video put out by the northwest avalanche

abc's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, there aren't many that can match this one for being just as annoying as it is unexplained. [ screeching ] that high pitched sound, wreaking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. >> want to hear the most annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief, i mean our crew thought it was something in the water system. >> that that's that loud out there in the winter. >>

here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for seconds as 5-year-old ethan goss disappears amidst the trees. he's fallen out of sight in that tree well. >> ethan? winston gaus digs his son out. the boy fighting sef indication. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million tiles online as this father us his close call 0 warn others causing it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and it was pretty emotional afterwards. it was a true moment, know, for me to pull him out. >> i had a near death experience. >> you never expect something like that to happen to you. but once it does it's kind of shocking. >> reporter: it's hard to see till you're up close. these branches block so much snow. one step down there you sink another six feet at least. a safety video put out by the northwest avalanche institut

abc's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, there aren't many that can match this one for being just as annoying as it is unexplained. [ screeching ] that high pitched sound, wreaking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials gas leak or wildlife. and the nearest train track is rarely used. >> want to hear the most annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief, i mean our crew thought it was something in the water system. >> that that's that loud out there in

. >> reporter: neal karlinksky, washington. >> that i never even thought of. >> i love all that fresh powder. >> coming up, mail carriers are no stranger to danger. >> traditionally it's the occasional nasty dog. in a new jersey community, it was wild turkeys. introducing new k-y touch gel cr me. for massage and intimacy. every touch, gently intensified. a little touch is all it takes. wait oh, yes, wait a minute mr. postman, wait, wait mr. postman snee postal carriers are lauded for their adherence to their unofficial motto. >> neither snow nor heat nor rain nor gloom of night saves these carriers from the swift with completion of their appointed rounds. >> some people hear roosters. around here we wake up to gobble, gobble. >> reporter: it seems wild culled desack in hills dale. >> if you shoo them, they leave. >> no, they don't run. >> reporter: which is why we were here in the first place. >> i think that's ridiculous. it's silly. >> reporter: helen is talking about what happened after wild turkeys, yes, we found them, surrounded a letter carrier's truck obtuse. he was so upset, c

abc's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, there aren't many that can match this one for being just as annoying as it is unexplained. [ screeching ] that high pitched sound, wreaking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the nearest train track is rarely used. >> want to hear the most annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief, i mean our crew thought it was something in the water system. >> that that's that loud out there in

here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for seconds as 15-year-old ethan goss disappears amidst the trees. he's fallen out of sight in that tree well. >> ethan? winston goss digs his son out. the boy fighting suffocation. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million times online as this father uses his close call to warn others calling it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, know, for me to pull him out. >> i had a near death experience. >> you never expect something shocking. >> reporter: it's hard to see till you're right here up close. but these branches block so much snow, it's not -- one step down there you sink another six feet at least. a safety video put out by the northwest avalanche institu

abc's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, there aren't many that can match this one for being just as annoying as it is unexplained. [ screeching ] that high pitched sound, wreaking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the nearest train track is rarely used. >> want to hear the most [ screeching ] >> guys, guys, guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief, i mean our crew thought it was something in the water system. >> that's that loud out there in the

here abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for seconds as 15-year-old ethan go disappears amidst the trees. he'sallen out of sight in that tree well. >> ethan? the boy fighting suffocation. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million times online as this father uses his close call to warn others calling it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. was a true moment, know, for me to pull him out. >> i had a near death experience. >> you never expect something like that to happen to you. but once it does it's kind of shocking. >> reporter: it's hard to see till you're right here up close. but these branches block smuch snow, it's not -- one step dowown there u sink another six feet at least. a safety video put out by the northwest

c's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, this one for being just as annoying as it is unexplained. [ screeching ] that high pitched sound, wreaking havoc on forest g grove, oregon, for weeks, mainly at night, even waking people up. >> isounds like brakes to me. the cyclical, you know, change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the arest train track is rarely used.d. annoying sound in the world? [ screeching ] >> guys, guy guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew and our belief, i mean our crew thoughght it wasomething in the water system. >> that that's that loud out there in the winter. >> collect the water system. that's w what the crew thinks. >> good luck

here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son to a heart pounding fight for seconds as 15-year-old ethan goss disappears amidst the trees. he's fallen out of sight in that tree well. >> ethan? winston goss digs his son out. the boy fighting suffocation. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million times online as this father uses his close call to warn others calling it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, know, for me to pull him out. >> i had a near death experience. >> you never expect something like that to happen to you. but once it does it's kind of shocking. >> reporter: it's hard to see till you're right here up close. snow, it's not -- one step down there you sink another six feet at least. a safety video put out by the northwest avalanche institute show

abc's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, there aren't many that can match this one for being just as annoying as it is unexplained. [ screeching ] that high pitched sound, wreaking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the nearest train track is rarely used. >> want to hear the most annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out sure is loud. and baffling. [ screeching ] neal karnsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief, i mean our crew thought it was something in the water system. >> that's that loud out there in the win

here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for seconds as 5-year-old ethan goss disappears amidst the trees. he's fallen out of sight in that tree well. >> ethan? winston gaus digs his son out. the boy fighting sef indication. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million tiles online as this father us his close call 0 warn others causing it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, know, for me to pull him out. >> i had a near death experience. >> you never expect something like that to happen to you. but once it does it's kind of shocking. >> reporter: it's hard to see till you're up close. these branches block so much snow. one step down there you sink another six feet at least. a safety video put out by t

abc's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, there aren't many that can match this one for being just as annoying as it is unexplained. [ screeching ] that high pitched sound, wreaking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the nearest train track is rarely used. >> want to hear the most annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief, i mean our crew thought it was something in the water system. >> that

here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for seconds as 5-year-old ethan goss disappears amidst the trees. he's fallen out of sight in that tree well. >> ethan? winston gaus digs his son out. the boy fighting sef indication. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million tiles online as this father us his it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, know, for me to pull him out. >> i had a near death experience. >> you never expect something like that to happen to you. but once it does it's kind of shocking. >> reporter: it's hard to see till you're up close. these branches block so much snow. one step down there you sink another six feet at least. a safety video put out by the northwest avalanche institute

abc's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, there aren't many that can match this one for being just as annoying as it is unexplained. [ screeching ] that high pitched sound, wreaking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the nearest train track is rarely used. >> want to hear the most annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] seattle. >> you know, yesterday our crew sort of figured it out. and our belief, i mean our crew thought it was something in the water system. >> that that's that loud out there

here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for seconds as 5-year-old ethan goss disappears amidst the trees. he's fallen out of sight in that tree well. >> ethan? winston gaus digs his son out. the boy fighting sef indication. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million tiles online as this father us his close call 0 warn others causing it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was a true moment, know, for me to pull him out. >> i had a near death experience. >> you never expect something like that to happen to you. but once it does it's kind of shocking. >> reporter: it's hard to see till you're up close. these branches block so much snow. one step down there you sink another six feet at least. a safety video put out by the northwest avalanche institute sho

abc's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, there aren't many that can match this one for being just as annoying as it is unexplained. [ screeching ] that high pitched sound, wreaking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the nearest train track is rarely used. >> want to hear the most annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief, i mean our crew thought it was something in the water system. >> that that's that loud out there in the winter. >> collect the wat

here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for disappears amidst the trees. he's fallen out of sight in that tree well. >> ethan? winston gaus digs his son out. the boy fighting sef indication. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a million tiles online as this father us his close call 0 warn others causing it the most frightening experience he's had as a parent. >> i remember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, know, for me to pull him out. >> i had a near death experience. >> you never expect something like that to happen to you. but once it does it's kind of shocking. >> reporter: it's hard to see till you're up close. these branches block so much snow. one step down there you sink a safety video put out by the northwest avalanche institute shows just how paralyzing i

abc's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, there aren't many that can match this one for being just as that high pitched sound, wreaking havoc on forest grove, oregon, for weeks, mainly at night, even waking people up. >> it sounds like brakes to me. the cyclical, you know, screeching of, you need to change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the nearest train track is rarely used. >> want to hear the most annoying sound in the world? [ screeching ] >> guys, guys, guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew sort of figured it out. and our belief, i mean our crew water system. >> that that's that loud out there in the winter. >> collect the water system. that's