Monte Pissis

Monte Pissis is a high volcanic massif in northwestern Argentina, located in La Rioja Province within the high Puna region. It is recognised as one of the major high peaks of the central Andes.

The mountain presents a remote, high-altitude climbing environment where routes approach from sparsely inhabited desert plateaus; visitors encounter puna landscapes, salt flats and volcanic rock. Because the summit sits well above surrounding terrain, expeditions often involve long approaches and high camps.

Formed as an extinct or dormant volcanic edifice within the Andean volcanic belt, the mountain has been known to local populations for centuries and became a target for mountaineers as high-altitude alpine sport developed in the 20th century.

Located in La Rioja Province in northwestern Argentina, the massif lies in the high Puna plateau near the border with Chile in a sparsely populated, high-altitude desert region.

• Access requirements: The mountain is in a remote high-Andean region and approaches typically require high‑altitude acclimatization, 4x4 access and multiday logistics for water and fuel.

Access is via the remote highlands of La Rioja Province. Most expeditions stage from the towns of Fiambalá or Chilecito; from there expect long 4x4 approaches across unpaved tracks. Local guiding companies provide vehicles, oxygen and basecamp support.

• Acclimatize thoroughly - Monte Pissis sits at 6,793 m (22,287 ft) and is one of the world's highest volcanoes.
• Plan with experienced high‑altitude support; the route crosses remote desert highlands with little to no rescue infrastructure.
• Water is scarce on approach; arrange logistics to bring both water and fuel, and avoid solo attempts.