Global Volcanism Program | Image GVP-08055
The circular Apoyo caldera is filled by beautiful Laguna de Apoyo. The NE caldera wall in the background rises about 120 m above the surface of the lake, which is only 78 m above sea level. The only road access to the lake is along its western shore. The caldera was formed by collapse along near-vertical faults following two major dacitic explosive eruptions about 23,000 years ago from a vent area inferred to be near the NE part of the caldera.
Photo by Jaime Incer.
This image is made available under the Creative Commons BY-NC 4.0 license terms.