The Gallatin National Forest Avalanche Center says the skiers were ascending a south-facing slope in the Bridger Range when they trigged the snow slide Sunday. They reported feeling the slope collapse with a "whump" and saw the snow fracture above them. All three were swept to the bottom of the slope and buried up to their chests.
KTVM-TV reports a 53-year-old man suffered a deep laceration to his knee and a hip injury that prevented him from walking out.
The skiers called Gallatin County Search and Rescue at noon, and the injured person was taken out on a toboggan by 3:30 p.m.