Crystal (Madsen) Hot Springs, located about 1.3 mi (2 km) north of Honeyville in Box Elder County flows from the base of a small salient extending west from the Wellsville Mountains (northern extension of the Wasatch fault zone). The springs flow from fractured Paleozoic rocks at temperatures between 121 and 135°F (49.5 and 57°C). Although there are a number of warm springs and seeps in the area, the original main spring orifice is no longer visible. A nearby cold spring 52°F (11°C), along with water from the hot springs, is used to help fill a 300,000-gallon- (1.14-million-liter-) pool, while the hot springs alone are used to fill therapeutic hot tubs and mineral pools