Porunita

20°50′35.1″S 68°36′49.5″W / 20.843083°S 68.613750°W / -20.843083; -68.613750Porunita is an inactive volcano in Chile.

It is a cinder cone which rises 90 metres (300 ft) above the surrounding plain and has a diameter of 800 metres (2,600 ft). The cone was constructed by andesite pyroclastic material and features a summit crater. The cone was formed 3.5 million years ago and has been degraded by erosion since then.