Southwestern culture dwellings were pueblos that formed villages. The pueblos were made from sandstone and adobe, which the people found in their desert surroundings. The pueblos kept the Native Americans out of the desert heat by including rooms for many of their activities, such as cooking, sleeping, and religious ceremonies. Arctic cultures made pit houses that they dug into the round and covered with wood and animal skins. These dwellings sheltered and insulated them from the extreme cold of their climate. They also made shelters from driftwood. Cultures from the Northwest made planks from cedar trees to build houses. Because the Northwest climate is mild, they did not need heavily insulated housing.