green, or pink. Made without foundations, the walls were built from slots that were 25 centimeters deep. The doors were proportional to the size of the room. Stairs, ramps, and ladders were built to allow access to the buildings. There are a number of consistent features surrounding the dwellings. They include water retention structures like the Mesa Verde Reservoirs, and stone towers. Each were about 60 meters long, 33 meters apart, and 2.5 meters high. In 2009 it was suggested that the shape of an oval bowl with curved sides and the uneven embankments on the long sides are unsuited for any kind of ball game; On the other hand, they appear to correspond with dance floors of the Tohono O'odham, used for Wi:gita ceremonies until at least the 1930s. For a period of time, pueblos throughout the Southwest were connected by a network of roads that radiated from Chaco Canyon, which is believed to have been a cultural epicenter. Remnants of this roadway system are evident throughout New Mexico and Arizona today. Types of dwellings In addition to the movable structures used by other Native Americans across North and South America, the Pueblo peoples created distinctive structures for living, worshiping, defense, storage, and daily life. Pueblo – Referring to both a certain style of Puebloan architecture and groups of people themselves, the term pueblo is used in architectural terms to describe multistory, apartment-like buildings made of adobe. In this article they are called "great houses". Great houses – Generally built on flat plains throughout the Southwest, the great house-style Pueblo dwelling sat independent of cliffs. Pit houses – Most of the populations of the Southwest lived in pit houses, carefully dug rectangular or circular depressions in the earth with wattle and daub adobe walls supported by log sized corner posts. Cliff dwellings – Constructed in the sides of the mesas and mountains of the Southwest, cliff dwellings comprised a large number of the defensive structures of the Pueblo people. Jacal is a traditional adobe house built by the ancestral Pueblo peoples. Slim close-set poles were tied together and filled out with mud, clay and grasses, or adobe bricks were used to make the walls. Lists of dwellings by state Arizona Chihuahua (Mexico) Colorado Nevada See table below. New Mexico Texas See table below. Utah Sonora Texas Unknown locations See also List of the oldest buildings in the United States