Incas in Central Chile and Uspallata Pass (32º50' S). This attack from the east would have been done in order to avoid the more direct but inhospitable routes crossing the Atacama Desert. José Toribio Medina claimed in 1882 that the Incas entered Central Chile from both north and east. Troops of the Inca Empire are reported to have reached Maule River and had a battle with Mapuches from Maule River and Itata River there. After securing the regions of northern Chile, Copiapó, Coquimbo, Aconcagua and the Maipo Valley around what is now Santiago, the Inca general Sinchiruca sent 20,000 men down to the valley
Flora of the Sonoran Desert absent on the California side of the Colorado River. Desert Holly ("Atriplex hymenelytra") can tolerate even the hottest and driest sites. The area where two vegetation types border, overlap, and transition is called an ecotone. The ecotone between the hotter, drier Colorado Desert and that of the relatively cooler and wetter Arizona Upland occurs from Parker, Arizona southeast to near Phoenix, then south to Organ Pipe Cactus National Monument. Density of vegetation gradually diminishes moving from the Arizona Upland into the Colorado Desert proper. can be found with stems climbing through shrubs and other vegetation, producing "spectacular" floral displays on