Global Volcanism Program | Image GVP-01869
Local legends suggest that the latest eruption of the San Pablo volcanic field took place about 500-700 years ago, forming the Sampaloc Lake maar. This 1.2-km-wide maar, seen here from the S, is one of the largest of a group of 36 maars in the volcanic field.
Photo by Chris Newhall, 1989 (U.S. Geological Survey).
This image is made available as a Public Domain Work, but proper attribution is appreciated.