Nevados de Pastos Grandes is a Miocene volcanic centre in the Puna, Salta province, Argentina. It is a volcanic complex with several centres named El Queva, Gordo and Azufre. Some minor Pleistocene glaciation has affected the volcanic complex. Volcanic activity has generated first dacitic lava flows and subsequently andesitic lava flows. The beginning, duration and end of the volcanism is uncertain, but some thermal springs persist to the present day. The volcano is part of the Puna volcanic region of the Central Volcanic Zone.