Global Volcanism Program | Image GVP-10171
This view from the road to the Cerro Verde summit shows the eastern side of Coatepeque caldera. The hill in the lake (right) is the Cerro Grande lava dome. The caldera formed during two major explosive eruptions, the first of which occurred about 72,000 years ago, forming the eastern part of the caldera in association with the Arce pumice fall and pyroclastic flow deposits. A lake partially filled the caldera floor prior to the Congo eruption associated with formation of the western part of the caldera.
Photo by Lee Siebert, 2002 (Smithsonian Institution).
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.