Snow Trench Shelter
A snow trench is a good, quick, simple shelter that you can make in deep snow conditions. This type of shelter will allow you to shelter yourself below the snow and wind level and use the snow’s insulating qualities. The snow must be deep and soft enough to shovel to an adequate depth. Mark an outline in the surface just slightly wider than your shoulders and 6 to 7 feet long. The trench should be waist deep to armpit deep, depending on snow conditions and the desired comfort for the inhabitants. If hard snow or an ice layer prevents you from digging to an adequate depth, build up the depth by making a wall around the excavation with large, stout snow blocks.