Global Volcanism Program | Image GVP-00534
The northern wall of Toba caldera rises about 500 m above the village of Haranggoal. Samosir Island, visible in the distance across Lake Toba on the right, is part of an uplifted block of caldera-fill deposits from the last major eruption of Toba about 74,000 years ago.
Photo by Tom Casadevall, 1987 (U.S. Geological Survey)
This image is made available as a Public Domain Work, but proper attribution is appreciated.