You’re crossing a glacier when your buddy falls through the snow into an invisible deep crack in the ice. Now he’s hanging there, with only the rope between you and him keeping him from falling even further into almost certain injury. What do you do? It’s time to put crevasse rescue skills to work. I spent an evening with the Vancouver section of the Alpine Club of Canada for more crevasse rescue training that will be essential to my Denali (highest peak in North America) att