Cerro Galán

Galán
Galán Location in Argentina
Highest point
Elevation	5,912 m (19,396 ft)
Coordinates	25°55′S 66°52′W / 25.917°S 66.867°W / -25.917; -66.867Coordinates: 25°55′S 66°52′W / 25.917°S 66.867°W / -25.917; -66.867
Geography
Location	Catamarca Province, Argentina
Parent range	Andes
Geology
Age of rock	2.2 million years
Mountain type	Caldera
Last eruption	Unknown

Cerro Galán is a caldera in Catamarca Province, Argentina, considered to be the best exposed large caldera in the world. It was formed 2.2 million years ago when 1,050 km³ of material was erupted, producing ignimbrite deposits stretching up to 100 km away. The caldera was originally the site of a large lake, but resurgence of the eastern caldera floor has confined the salty Laguna Diamante to the caldera's western edge.