Socompa is a large stratovolcano at the border of Argentina and Chile with an elevation of 6,051 metres (19,852 ft) metres. Part of the Chilean and Argentine Andean Volcanic Belt (AVB), it is within the Central Volcanic Zone, one of the various segments of the AVB. This part of the Andean volcanic belt begins in Peru and runs first through Bolivia and Chile, and then through Argentina and Chile, and contains about 44 active volcanoes. Socompa lies close to the pass of the same name, where the Salta-Antofagasta railway crosses the border.
Socompa as seen from near the Salar de Imilac.
Socompa from space, the sector collapse deposit lies on the upper side
Socompa as seen from nearby railway station Socompa
El Negrillar volcano just north of Socompa; the white area to the right is part of the Socompa landslide deposit
Salta–Antofagasta railway
The Salta–Antofagasta railway, also named Huaytiquina, is a non-electrified single track railway line that links Argentina and Chile passing through the Andes. It is a 1,000 mm metre gauge railway with a total length of 941 km, connecting the city of Salta (Argentina) to the one of Antofagasta (Chile), on the Pacific Ocean, passing through the Puna de Atacama and Atacama Desert.
A train near the passing loop of Pascua, 2019
Image: Salta antofagasta railway
engineer Richard Maury (third from left) with railway workers in Salta
Train at Augusta Victoria station