It is situated in the Oruro Department, Ladislao Cabrera Province, Salinas de Garci Mendoza Municipality, Villa Esperanza Canton.

During this activity, basalt-trachyandesite rocks were ejected, including xenoliths consisting of granite.

These centres mostly consist of lava flows of trachyandesitic to dacitic composition.

[1] However, in terms of Pb isotope ratios and geochemistry the eruption products of the maars bear no resemblance to these at Chiyar Qullu.

[4] Potassium-argon dating has yielded an age of less than 128,000 years ago on a lava bomb on Ñiq'i Quta.