Pissis

Pissis is a stratovolcano located in the Andes Mountains, on the border between Argentina and Chile. It is the third-highest volcano in the world and the second-highest mountain in the Western and Southern Hemispheres.

Pissis is characterized by its arid environment and heavily glaciated peak, although the glaciers have been significantly reduced in size in recent decades. The volcano is part of the Atacama Desert, one of the driest places on Earth.

The volcano is thought to be composed of dacite and rhyolite lavas and pyroclastics. Evidence suggests that it has been active in the Holocene epoch, although no historical eruptions have been recorded.

Its remote location and challenging access contribute to relatively few ascents compared to other high-altitude peaks in the Andes. The first successful ascent is generally attributed to the Polish climbers Stefan Osiecki and Jan Szczepanski in 1937.

Pissis is considered a dormant volcano, but its potential for future eruptions remains. The volcanic activity could pose hazards to the surrounding environment and any future settlements or infrastructure development in the region.