Global Volcanism Program | Image GVP-04493
Steam clouds rise above two of three summit craters at Ecuador's Sangay volcano. Continual eruptions since 1934 have frequently modified the morphology of the volcano's summit. At the time of this 1976 view from the east, a lava flow from the southernmost crater (right) was descending the western flank.
Photo by Gordon Armstrong, 1976 (courtesy of Minard Hall, Escuela Politécnica Nacional, Quito).