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Igloo is the structure of the building made from blocks of snow compacted arrangement.
Igloo synonymous with Inuit culture, although many Native North America also build an igloo that some of them are large and complex.
A classic form of the igloo is a dome-shaped structure, with blocks of ice are arranged to resemble a spiral.
Igloo roof had a small hole for ventilation while the entrance was dug so it looks lower than igloo itself.
Doors that as it is inserted so that the temperature inside the igloo remains relatively warm.
Although made of ice, the temperature inside the igloo was quite warm due to body heat and the use of stone is heated to raise the temperature.
Igloo is made in a unique way. First, blocks of compacted snow that has been cut. The blocks are then prepared without the use of cement or buffer.
After the igloo is completed, the heat from the melting snow will cause the block a little. However, due to cold temperatures, melting block immediately frozen back, creating a kind of ice that strengthens once menginsulasi igloo.
The temperature inside the igloo stays warm for snow is an excellent insulator. In addition, some North American natives also add leather and fur in layers to keep warm igloo.