Tromen

Tromen is a dormant stratovolcano in Neuquen Province that rises to 4,114 meters with a main crater about 500 meters wide. Nine smaller cinder cones surround the peak and form part of its volcanic system.

The last documented eruption occurred in 1751, followed by another in 1822, with geological evidence showing both explosive and effusive activity throughout its formation. The volcanic behavior changed over different periods.

Local Mapuche and Pehuenche communities call this mountain Tomen or Punmahuida, reflecting their connection to the volcanic landscape. These names come from their language and remain in use today.

The terrain consists of sharp volcanic rock, so sturdy hiking boots are necessary and careful footing is required throughout. Weather can change rapidly at this altitude, so be prepared for sudden shifts in conditions.

The Laguna del Tromen at the volcano's base has acidic water that provides a natural breeding ground for many water birds. This unusual ecosystem has adapted to the mountain's volcanic conditions.

GPS coordinates: -37.14023,-70.04934

Latest update: December 9, 2025 18:49