South Mountains (Arizona)

The South Mountains (O'odham: Muhaḍagĭ Doʼag, Yavapai: Wi:ki'tiyeda,^[1] Maricopa: Vii Kwxas), known locally as simply South Mountain, is a mountain range in central Arizona in south Phoenix, Arizona. The majority of the range is public land managed by the City of Phoenix as South Mountain Park, but a small portion extends into the Gila River Indian Community.

Geologically, the South Mountains are thought to be a metamorphic core complex: evidence of movement of the North American tectonic plates from southwest to northeast and northeast to southwest, pushing up a series of mountain ranges including South Mountain. Other ridges with parallel orientation lie within the basin covered by basin fill sediments. The structural basin forms the Phoenix metro area, which appears flat like a lake around mountains that rise over it like islands. The buried ridges are in the same orientation as the South Mountains, about one km high, and about one km apart from peak to peak, perhaps about 15 of them underneath the basin fill.^{[citation needed]}

The mountain, along with the nearby Sierra Estrella, is considered sacred by the Akimel O'odham and the Kwevkepaya band of Yavapai. This had become a point of contention prior to the construction of Arizona State Route 202 through the range's southwestern corner.^[2][3] The construction of the highway ultimately left a gash in the range at the border of the Gila River Indian Community within the City of Phoenix and South Mountain Preserve.

The South Mountain Preserve is part of the Phoenix Parks System and is the second largest municipal park in Arizona, and the 13th largest municipal park in the world. The preserve features recreational facilities such as ramadas, hiking and mountain biking trails, and equestrian facilities.