accounting for 20% of allki fatalities. in this dramatic video posted on live leak in 2012 a snowboarder is buried wle his friend's camera rolls. contorted, legs and arm above him like cement. >> if you hit the tree youan knock a lot of the snow on the ee off. >> reporter: if you fall in try to keep a hand in front ofour face to clear a place to possible and useing as leverage to push yourself out and finally and most importantly, always ski with a buddy and keep each other in sight. that's what saved ethan. >> my throat hurts right now. i was trying so hard to g g snow away from my face and itust kept coming down. >> you might hear somebody who is in a well but it doesn't really touch home until you actually have someone that you know or someone, well, like a loved one fall in. >> reporter: for "good morning america," neal karlinsky, abc news, snoqualmie pass, washington. >> a real danger. i'm s s glad we s swed that. another tip, sway on those -- the green circles. those are always -- >> bunun hills. >> thank you, neal. >