On top of Black Mountain are the ruins of an ancient Hohokam fortification. Long stone walls, circular stone rings, petroglyphs, man-made trails, and pottery sherds can still be seen today. However, the site is on reservation land, and is therefore not open to the general public.[5][6]
^Fontana, Bernard L.; J. Cameron Greenleaf; Donnelly D. Cassidy (1959). The Kiva: A Fortified Arizona Mountain. Arizona Archaeological and Historical Society, Arizona State Museum.