Potosi Mountain, Mountain peak in Spring Mountains, Nevada.

Potosi Mountain is a limestone massif in the Spring Mountains, about 30 miles southwest of Las Vegas. Its ridgeline slopes down to the right, with dark gray and brown rock and pale horizontal bands along the crest. Below, tan fans and shallow gullies spread to a flat plain.

Mormon settlers began mining operations in 1855 after discovering substantial deposits of lead and metal ores within the mountain. This mining activity shaped the region's early economic development.

The mountain's giant cave was used for vision quests by Chemehuevi shamans in the mid-19th century. The site is also recorded under the name ɁOomposi. The mountain itself is known as Double Up Mountain and Olcott Peak, and its main bedrock is limestone.

Forest Road 509 leads toward the summit but requires a high-clearance four-wheel-drive vehicle due to steep and rough terrain. Check road conditions before visiting since weather and maintenance can affect access.

The mountain serves as a broadcasting hub for Las Vegas, hosting seven full-power FM radio stations from its summit. It was the location of the first HD Digital radio transmission in the United States.