Bartlett had learned his lesson during the night in the tent, so with Kataktovik and McKinlay, they started building an igloo. The process involved first finding a relatively level spot and preferably on heavy, sturdy ice that appeared unlikely to fracture, though this proved impossible to predict, and often there wasn’t much time at the end of the day in the dying light. They had to work fast. Using long-bladed snow knives as well as handsaws, they cut large blocks of snow and stacked them in a square shape for the lower walls, tapering them in smaller sizes up to the roof. The blocks would
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