Colachi

Colachi is a stratovolcano in the Antofagasta Region that rises to 5,631 meters in elevation. The mountain displays a worn summit crater and visible lava flows streaming down its eastern slopes.

The volcano formed during the late Miocene period on elevated welded ignimbrites. It developed as part of a broader volcanic system alongside the nearby Acamarachi volcano.

The mountain holds meaning for indigenous communities in northern Chile who have long lived in these volcanic highlands. It remains an important landmark in the region's cultural geography.

The remote location and extreme elevation require specialized climbing gear and detailed trip planning. Visitors must allow sufficient time to acclimatize to the altitude before attempting any ascent.

A massive lava flow of glassy silica stretches across 7 square kilometers between this peak and Acamarachi. This distinctive formation reveals the shared volcanic activity that shaped both mountains.

GPS coordinates: -23.24071,-67.64584

Latest update: December 14, 2025 17:40