Copahue

Ñorquín Department, Chile

Copahue is a stratovolcano in the Andes on the border of Bío Bío Region, Chile and Neuquén Province, Argentina. There are nine volcanic craters along a 2 km line, the easternmost of which is historically the most active, and contains a 300 m wide crater lake with a pH ranging between 0.18 and 0.30.

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