Tinguiririca Volcano is a massive and active stratovolcano located in Chile 's VI Region ( O'Higgins ) and near the Argentinian border . Constant fumarolic activity occurs within and on the NW wall of its summit crater and hot springs and fumaroles can also be seen on the western flanks , as illustrated by the image on the right . It was near this volcano that the Uruguayan Air Force Flight 571 crashed in 1972 with its survivors lost for seventy-two days
Uruguayan Air Force Flight 571
Uruguayan Air Force Flight 571
Tinguiririca Volcano