What is "colachi"

Colachi is a stratovolcano in the Antofagasta Region of northern Chile. It was built on a basement of ignimbrites. A 7 km² silicic lava flow lies on the saddle between the volcano and Acamarachi.

Colachi is part of a chain of stratovolcanoes stretching along the eastern side of the Salar de Atacama, the most active of which being Lascar.