Caichinque, Mountain summit in Antofagasta Region, Chile.

Caichinque is a volcanic complex on the high Andean plateau of the Antofagasta Region, lying between Salar de Talar and Salar de Capur, southwest of Salar de Atacama. It stands directly south of Cerro Miñiques and southeast of Cordón Puntas Negras, part of the main Andean volcanic chain here. Its rocks range from basalt to dacite, and it grew atop a rhyodacitic ignimbrite.

The summit formed millions of years ago through volcanic activity and became part of the northern Chilean Andes near the Atacama Desert. This volcanic origin shaped its structure and continues to define its geological character.

Caichinque lies between the Salar de Talar and the Salar de Capur, salt flats that have long guided herders and travellers across the Antofagasta altiplano. The volcano's name is used locally for the surrounding grazing country, and its slopes are crossed by paths linking the two basins.

Reaching the summit requires specialized climbing gear and proper acclimatization to high altitude conditions before attempting the climb. Only experienced mountaineers with advanced skills should consider an ascent.

The mountain displays varying volcanic rock types including basalt and dacite arranged in distinct zones across its slopes. This geological variety reveals the complex magmatic history layered throughout the peak.