An igloo is a hostel structure sometimes generated in snowy taigas, snowy plains or snowy slopes and built mainly of snow blocks. Igloos may serve as a small house and are composed primarily of snow blocks, sheltering a carpeted interior containing a bed, furnace and crafting table. In half of all igloos, an oak trapdoor can be found under the carpet (the third white carpet straight ahead from the doorway), leading down a long ladder shaft to a basement. This passageway and the basement are…