purupuruni is a group of lava domes in southern peru and a correlative geological formation. they are among the many volcanoes that exist in peru and whose activity has been associated with the subduction of the nazca plate beneath the south america plate. purupuruni is associated with a geothermal field and a caldera. volcanic activity occurred during the pleistocene 53,000 ± 8,000 years ago but also during the holocene about 5,300 ± 1,100 years ago; today the volcano is considered to be a low hazard volcano but is being monitored nevertheless.