Planchón-Peteroa
| Planchón-Peteroa | |
|---|---|
Peteroa as seen from the summit of Planchón. | |
| Highest point | |
| Elevation | 4,107 m (13,474 ft) |
| Coordinates | 35°14′24″S 70°34′12″W / 35.24000°S 70.57000°W |
| Geography | |
| Parent range | Andes |
| Geology | |
| Mountain type | Complex volcano |
| Last eruption | February to June 2011 |
Planchón-Peteroa is a complex volcano extending in a north–south direction along the border between Argentina and Chile. It consists of volcanoes of various ages with several overlapping calderas. Those include Volcán Planchón, Volcán Peteroa and Volcán Azufre.
A partial collapse of the complex about 11,500 years ago produced a major debris avalanche, which followed the course of the Teno River until reaching the Chile Central Valley.
Peteroa has a crater lake. Lagunas de Teno lies at the foot of Planchón volcano. In this area also is the Vergara International Pass.