The Challenge XXX: Dirty 30 is a season of a show on MTV.
A hot spring is a spring produced by the emergence of geothermally heated groundwater that rises from the Earth 's crust .. spring. Spring ( hydrology ). geothermally heated. Geothermal ( geology ). groundwater. groundwater. crust. crust ( geology ). There are geothermal hot springs in many locations all over the crust of the earth .. crust. crust ( geology ). earth. earth. While some of these springs contain water that is a safe temperature for bathing , others are so hot that immersion can result in injury or death .