Global Volcanism Program | Image GVP-04230
Miravalles, seen here looking NE from the Guayabo caldera floor, is the youngest feature of the volcanic complex. Multiple edifices have grown in the eastern part of the 15 x 20 km caldera, which formed sometime between 1.5 million and 600,000 years ago.
Photo by Guillermo Alvarado, 1985 (Instituto Coastarricense de Electricidad).
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.