Global Volcanism Program | Image GVP-12794
The acidic crater lake of Santa Ana is within the deepest of the nested summit craters, seen here from the S in 2011. The floor of a larger crater is visible across the center of this photo, and both lava flows and deposits from explosive eruptions are exposed in the crater walls.
Photo by Lis Gallant, 2011.
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.