(Columa)
Bolivia
18.50 S, 68.07 W 
  summit elevation 3876 m 
  Maar 
Cerro Colluma Volcano is located in western Bolivia.
Further reading
  Siebert, L. and Simkin, T., 2013. Volcanoes of the world: An illustrated catalog of Holocene volcanoes and their eruptions.
No recent eruptions.