The document discusses different types of shelters used by the People of the Plateau. Pit houses, which are partly underground structures with wooden beam roofs, are used in winter months for protection from cold weather and can be reused for several years. Tipis, which are tents made of grass, wood and animal skins, are used in spring and summer after leaving pit houses, and are easy to build for survival during those seasons. Pit houses can be very large, up to 20 meters wide, and keep their occupants warm and dark inside.