Tutupaca is also the name of a geothermal field in the neighborhood of the volcano, which includes the areas of Azufre Chico, Azufre Grande, Callazas River, Pampa Turun Turun, and Tacalaya River; they are part of the same geothermal system whose temperature at depth is higher than . The fields feature fumaroles, geysers, mud pots and occurrences of sulfur, both solid and in the form of hydrogen sulfide gas, as well as siliceous sinter and travertine deposits. Hot springs at the foot of the Tutupaca volcano discharge water into the rivers.