Global Volcanism Program | Image GVP-01133
Two caldera walls can be seen in this view across the flat Sandsea caldera floor. The low ridge in the shadow in the foreground is the northern wall of the younger Tengger (Sandsea) caldera, which merges at the upper left with the background ridge, the northern wall of the 16-km-wide Ngadisari caldera.
Photo by Lee Siebert, 1995 (Smithsonian Institution).
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.