Different housing was used by the Stó:lō during the summer and winter months. During the summer, the people were involved in seasonal rounds to collect plants and berries, shellfish, and to hunt and fish. During this time, the Stó:lō people lived in temporary shelters that could be moved from one location to the next with ease. The temporary shelters were generally made from poles, and mats made of bulrushes or cedar bark were fastened to the poles to provide protection. In winter months, the Stó:lō lived in structures called longhouses (s'iltexwáwtxw ) or in semi-subterranean houses called pithouses (sqémél ).