The Subarctic Zone People utilized many types of dwellings, but they were all tiny, easy to build up and take down, and move from one location to another. The majority of Dene people lived in plains-style tipis (skin tents supported by whalebones) or brush lean-tos. Other groups included the Gros Ventre, Salish, and Kutenai, who built fishtrap canoes for transportation. Plains-style tipis were usually made from buffalo skin or heavy cloth that was stripped off the body before it was killed. The hide was then cut into strips about 4 feet long and sewn together with sinew or rawhide to form a cylinder about 6 feet high and 10 feet in diameter. The open end of the tent was left on the ground as an entrance. Wooden pegs fixed into the ground around the perimeter held the tent in place while someone inside cooked food over a fire within the tent. In addition to skins, some Dene people also used wood for their homes. They would carve out spaces in the trunk of a large tree using only a knife and their hands. There were no roofs on these houses; instead, the trees were covered in earth or stones to make them weatherproof. Ojibwa people also used the trunks of smaller trees as posts for their campsites and for marking boundaries.