Their sleeping bags in the foreground, four members of a snowmobile group spending their first night out in an Eskimo-type igloo, begin cutting blocks of hard snow to build the snow-house. They are members of the Musk-Ox Expedition, a group of Canadian soldiers which will set out on February 14th from Churchill, Manitoba, on a 3,100-mile trek up above the Arctic Circle and back to Edmonton, Alta. Equipped with double-lined nylon tents, the soldiers will build snow houses whenever strong winds and low temperature make the tents unsuitable. Captain Bill Black, Renfew, Ontario, supervises the soldiers building the house.

Photo is dated 1946.