Aguas Calientes Volcano or Cerro Aguas Calientes, also called Simba, is a cone-shaped stratovolcano located 5 km east of Lascar Volcano and directly north of Laguna Lejia, in the Antofagasta Region of Chile. Also in the area are the volcanoes Acamarachi and Chiliques.
A small crater lake is found within its summit crater, which is one of the highest lakes in the world.