Laguna Socompa is a small lake in the Salta Province of Argentina, at the foot of Socompa volcano. It covers an area of about 200 hectares (490 acres) and has an average depth of about 0.45–0.62 metres (1 ft 6 in–2 ft 0 in). The lake is fed by arroyos and springs, some of which are hot springs. Its waters are very rich in arsenic and otherwise salty and slightly alkaline; these properties and the regionally high UV radiation give Laguna Socompa extreme environmental conditions.