Meteorologists and weather experts across North America agree— La Niña is coming. A ski patroller stands next to a massive tree well at Whitefish Mountain Resort, Montana. Photo&colon ...

A tree well and snow immersion suffocation accident can happen when a skier or snowboarder falls into deep loose snow, or into a tree well, and becomes immobilized under the snow.

A snowboard, still attached to a pair of boots, stuck out of the snow next to a partially-buried tree. The skier sprung into action, and this video of his rescue quickly went viral.

Winston Goss was skiing with his 15-year-old son, Ethan Goss, in McCall, Idaho, when Ethan disappeared and fell into a tree well, the snow at the bottom of a tree.