Lang Shoulder Large Natural on 2 aspects

We were the first group into the zone since the last snow Thursday morning. Assuming this very large natural avalanche occurred in the storm.

Storm snow started in the alpine and as it moved down the mountain it stepped down in multiple areas to deeper PWLs. This avalanche propagated to 2 different aspects and produced 2 x 3.5 sized avalanches. The East aspect ran 1 km and the debris piled up for 250 m across the flats and into the timber taking out several trees and the normal pickup zone for sled skiers. The SE avalanche ran 850M across two large flat benches, taking out timber and leaving a massive debris pile spread over 650M. This avalanche took out the normal up track for sled skiing. In over 20 years of riding in this area I have never observed an avalanche travel this large and through this terrain.