Purupuruni is a group of lava domes in southern Peru and a correlative geological formation.

[13] These deposits reach thicknesses of 10 metres (33 ft) and also occur on neighbouring volcanic centres.

[9] Purupuruni has formed on the rim of a depression, which is surrounded by eroded Quaternary volcanoes and appears to be a 13 kilometres (8.1 mi) wide caldera[4] southwest of the domes.

[11] They are part of the wider "Purupurini Volcanics", which are named after Purupuruni and also form other volcanoes in the region.

[21] In the Tacna Region of Peru alone there are over 60 separate volcanoes, two of which, Tutupaca and Yucamane, have been active in historical time.

[29] Earthquake swarms in 2020 and 2021 do not appear to have been caused by volcanism;[30] they are instead linked to local fault activity.