Global Volcanism Program | Image GVP-05594
The degassing Poás crater, seen here in an aerial view from the NE, lies within the smaller of two nested calderas at the summit. This inner caldera is 4 km in diameter. A tourist overlook along the ESE crater rim near the upper left provides a view into the crater.
Photo by National Aeronautics and Space Administration (NASA), 1982.
This image is made available as a Public Domain Work, but proper attribution is appreciated.