On the western and northwestern flanks, solfataras are present both in the form of fumaroles and of steaming ground, and the Aguas Calientes de Tacora hot springs are located southwest of the volcano. Further, geyserite cones indicate that geysers were formerly active on the volcano. Seismic tomography has been used to image both the hydrothermal systems and magma systems of the volcano, and Tacora has been prospected for geothermal power generation. In 2009, the Chilean Ministry of Mining recorded bids for geothermal development at Tacora, and one bid was approved by the Ministry in early 2010.