Global Volcanism Program | Image GVP-04374
A large central cone fills much of the large breached caldera at Galeras volcano. It is seen steaming here at the upper right on March 18, 1989 from the SE caldera rim. The El Viejo flank crater can be seen at the right-center, about halfway up the central cone, with the Bastón fissure to the right, just below the rim of the main crater. The central cone has been the site of frequent historical eruptions since the time of the Spanish conquistadors.
Photo by Norm Banks, 1989 (U.S. Geological Survey).