“ The walls of the Casa Grande are heavy and massive, ranging in thickness from 41⁄2 to 13⁄4 feet. To save work and to reduce weight on the foundation, the Indians narrowed the walls as they built them up. 7 The outside surface bows inward as the wall rises. The inside surface, however, is nearly vertical. ”

“ You may enter the Casa Grande (Big House) only on a ranger-conducted guided tour.
1.
From about 2,000 years ago until about A.D. 1450, people living in this area developed and expanded a stone-age civilization that the archeologists call the Hohokam (Ho-Ho-Kahm) culture. Hohokam means “those who have 2 gone” in the language of the nearby Pima Indians, who are probably descendants of these prehistoric people.
The Hohokam lived in this region for many centuries before building walled villages like this between A.D. 1300 and 1450. ”

“ This wall and building of this village are of caliche, a limy subsoil found 2 to 5 feet below the surface of this region. To get in or out of the village the Indians used ladders to climb over the wall. The foundations, all that remain of the wall, are covered with wire reinforced, tinted-cement stucco to protect them. Stepping or sitting on the walls may damage them. Help us to protect the walls. ”

“ The $10 annual permit which is valid for some 7,000 Federal areas administered by the National Park Service, Forest Service, Bureau of Sport Fisheries and Wildlife, Bureau of Land Management, Bureau of Reclamation, Tennessee Valley Authority and Corps of Engineers may be purchased at Casa Grande Ruins National Monument. ”