Black Canyon of the Colorado the Nevada side of the canyon is the Sauna Cave. This cave was drilled by miners working on Hoover Dam while it was being constructed. It is a deep cave with calcium carbonate crystals on the walls. At the end of the cave is a hot spring, which causes temperatures in the cave to reach . One prominent canyon that splits from this canyon south of the Hoover Dam is Boy Scout Canyon. Boy Scout Canyon has water running through it that is warmed from a geothermal source. On the Arizona side of the river, there are several large hot
Big Bend of the Colorado State Recreation Area Big Bend of the Colorado State Recreation Area Big Bend of the Colorado State Recreation Area is a public recreation area located in the Lower Colorado River Valley within the city of limits of Laughlin in southern Clark County, Nevada. The park is located directly across the Colorado River from Bullhead City, Arizona, and is approximately downstream of the Davis Dam. The park has two miles of shoreline and riparian areas. The majority of its consists of canyons and washes. The Fort Mohave Land Act of 1960 saw the transfer of of federal land in the Laughlin Big Bend area