On our descent down Mount Rainier, we made our way around the Wilson Glacier and crisscrossed the Nisqually Glacier, trying to avoid the many open crevasses, however, came to a crevasse we could not go around. We located a snow bridge to traverse over. After testing the bridge, we decided it was safe to cross. When it was my turn to go over, the snow bridge collapsed. I fell 14 feet and became wedged in the crevasse, upside down.