Global Volcanism Program | Image GVP-04136
This December 1969 photo shows the crater of Cerro Negro a year after the end of the 1968 eruption. The two craters, separated by a narrow septum, are located north of the summit of the cone. The slopes of Las Pilas volcano are in the background. The morphologies of Cerro Negro's crater and summit have varied dramatically during the course of historical eruptions as a function of the location of the eruptive conduits, vigor of the eruptions, and direction of prevailing winds.
Photo by Willard Parsons, 1969 (courtesy of Bill Rose, Michigan Technological University).