The snow cave shelter is a most effective shelter because of the insulating qualities of
snow. Remember that it takes time and energy to build and that you will get wet
while building it. First, you need to find a drift about 3 meters deep into
which you can dig. While building this shelter, keep the roof arched for
strength and to allow melted snow to drain down the sides. Build the sleeping
platform higher than the entrance. Separate the sleeping platform from the snow
cave's walls or dig a small trench between the platform and the wall. This
platform will prevent the melting snow from wetting you and your equipment. This
construction is especially important if you have a good source of heat in the
snow cave. Ensure the roof is high enough so that you can sit up on the sleeping
platform. Block the entrance with a snow block or other material and use the
lower entrance area for cooking. The walls and ceiling should be at least 30
centimeters thick. Install a ventilation shaft. If you do not have a drift large
enough to build a snow cave, you can make a variation of it by piling snow into
a mound large enough to dig out.
The idea behind this shelter is to get you below the snow and wind level and use the snow's insulating qualities. If you are in an area of compacted snow, cut snow blocks and use them as overhead cover. If not, you can use a poncho or other material. Build only one entrance and use a snow block or rucksack as a door.
Use snow blocks for the sides and parachute material for overhead cover. If snowfall is heavy, you will have to clear snow from the top at regular intervals to prevent the collapse of the parachute material.
Snow House/ Igloo
In certain areas, the natives frequently use this type of shelter as hunting and fishing shelters. They are efficient shelters but require some practice to make them properly. Also, you must be in an area that is suitable for cutting snow blocks and have the equipment to cut them (snow saw or knife).