Mosquito Creek - Couloir Avalanche

I made about 5 turns from the top of the couloir and tucked over to the side to video the second skier in what I thought was a safe location. Around turn 3 the second skier triggered a slab which carried me ~200m, there was a decrease in the angle of the slope and I was backstroking like crazy and slowed while the avalanche carried on another 150-200m in the fan. It may have been a windslab layer and was ~40-50cm crown that amassed the new storm snow on the way down. Lost some kit, no injuries.

The new storm snow skied well until it didn't

We headed up the couloir across from the Mosquito Creek parking. On the descent, I made about 5 turns from the top of the couloir and tucked over to the side to video the second skier in what I thought was a safe location. Around turn 3 the second skier triggered a slab which carried me ~200m, cartwheeled a bunch, skis released, for a while I was face down heading downhill, and had my airway fill with snow, hard time breathing, etc, there was a decrease in the angle of the slope and I was backstroking like crazy and slowed while the avalanche carried on another ~200m in the fan. It may have been a windslab layer and was ~40-50cm crown that amassed the new storm snow on the way down. One ski ended up in some rocky steeper terrain. We got lucky, lost some kit, no injuries.