Cerro Toco is a stratovolcano located in the eastern part of the Atacama desert in Chile's II Region (Antofagasta), approximately 6 km (4 mi) south of the border between Bolivia and Chile and 12 km (7 mi) SE of the Juriques and Licancabur volcanoes. It conforms the north eastern extreme of the Purico Complex, a pyroclastic shield made up by several stratovolcanoes, lava domes and a maar.

Cerro Toco
Cerro Toco lies at the NE end of the Purico complex. Camera location: 22° 55.411'S 7° 50.699'W Heading: 112° Alt.: 4,351 m (14,275 ft)
Highest point
Elevation	5,604 m (18,386 ft)
Coordinates	22°56.396′S 67°46.816′W / 22.939933°S 67.780267°W / -22.939933; -67.780267
Geography
Location	Chile
Parent range	Andes
Geology
Mountain type	Stratovolcano

Cerro Toco is located in the Chajnantor Scientific Reserve, as is most of the Purico Complex. The Atacama Cosmology Telescope and the Huan Tran Telescope are located on the western side of the mountain at approximately 5,200 m (17,100 ft).