Igloos are dome-shaped houses built from blocks of snow by the Inuit people. a house made from blocks of hard snow or ice (iglu ). Temporary dome-shaped winter home or hunting-ground dwelling of Canadian and Greenland Inuit (Eskimos), made from blocks of snow. The builder chooses a deep snowdrift of fine-grained, compact snow and cuts it into blocks. After a row of blocks has been laid in a circle, their top surfaces are shaved off in a sloping angle to form the first rung of a spiral. Additional blocks are added to the spiral to draw it inward until a dome is completed, leaving a ventilation hole at the top
A reinforced concrete, earth-covered shelter used for storing explosives and munitions