Agua Fria National Monument

about 1000 years ago on top of Indian Mesa. This is part of the wall of the fort that surrounded the village. The holes in the wall are viewing holes so the defenders can view the only path to the top. There are several branches of an ocotillo plant in the foreground. Petroglyphs are scattered across the numerous puebloan ruins, which were built between 1250 and 1450 C.E. when several thousand Native Americans, known as the Perry Mesa Tradition, inhabited the region. The petroglyphs depict animals, geometric figures and abstract symbols and are found by the thousands. Numerous ruins of agricultural terraces and irrigation devices indicate that farming was widespread during this period. Other historical entities that are found include 19th century mining features and Basque sheep camps. ==Natural history==

Situated between and in elevation, the monument is primarily composed of semi-desert grassland but also contains extensive riparian stands of cottonwoods and willows which are tied to the Agua Fria River. More than 140 bird species have been recorded at the monument. Notable species of reptiles and amphibians, including the leopard frog, the garter snake, and the desert tortoise, can be seen at the monument. Mammals such as the pronghorn, mule deer, white-tail deer and javelina are relatively common. The elk, black bears and mountain lions are also found in the monument, but are much less common. Native fish including the longfin dace, the Gila mountain sucker, speckled dace, and three endangered native fish including the Gila intermedia, charalito, and desert pupfish exist in the -long Agua Fria River and its tributaries. In late 2004, the BLM and the Sierra Club helped spark the formation of the Friends of the Agua Fria National Monument, a non-profit organization created to assist the federal agency in monument protection, management, and outreach. ==See also==