Global Volcanism Program | Image GVP-03674
During an eruption from December 1975 to June 1976, blocky lava flows from the summit lava dome of Colima volcano descended the east and SE flanks. The SE flank flow (left) split into two lobes, the longest of which traveled 3.5 km. Another flow traveled initially to the NE before splitting around El Volcancito, the knob on the right horizon, and descending the east flank (right). All three lobes cross a sloping upper-vegetation limit that marks the location of a caldera wall that has been largely buried by growth of Colima volcano.
Photo by James Allan, 1981 (Smithsonian Institution).