Visoke volcano is the NE-most of a cluster of large stratovolcanoes at the southern end of the Virunga Range. The volcano contains a 450-m-wide lake in its summit crater (left center). Lobate lava flows descend the flanks of the volcano. A NE-SW-trending fissure zone has produced many scoria cones NE of the volcano (top). An eruption in 1957 formed two small cones on the north flank, 11 km from the summit. Aerial photograph courtesy of Henry Luc Hody (Belgian ambassador).