Igloo is a house built from compacted snow and has a dome structure. These structures were built to provide shelter from the cold. The type of snow used to build an igloo should hard enough for snow blocks. The igloo provides better protection from the cold than a tent. This kind of structure was originally built by people living near the artic circle especially in Greenland, Alaska, and Canada.

Steps involved in constructing an igloo

The first thing is to prepare the snow blocks. For this you would need either a large knife or a snow saw. The length of the blocks should be around one meter long, with the width and height around 20 centimeter and 40 centimeter respectively. Place the snow blocks in such a way they form a spiral structure, which will help you form the dome. This structure should be around the place from where you cut the snow blocks from. Continue placing the blocks making sure that they curve inwards.

Make a hole under the wall. This will serve both as an entrance and a cold sink. Some of the blocks can be placed horizontally to form a sleeping platform. When it comes to placing the last block on the top, make sure it is bigger than the hole. This block should be cut and shaped from the inside, so that you get a perfect fit.

Use an ice axe to make some ventilation holes. The reason behind this is to prevent the build up of carbon monoxide, which is dangerous. The igloo provides warmth by trapping the hot air generated by your body and it forces the cold air out through the cold sink. In case you are planning to use a stove, make sure that there is some proper ventilation. This is to prevent carbon monoxide from building up in the igloo.

Place some blocks over the entrance so that it is not blocked by snow. Now your igloo is ready for occupation.