Global Volcanism Program | Image GVP-02065
The 11-km-wide lake-filled Towada caldera formed during as many as six major explosive eruptions over a 40,000-year period ending about 13,000 years ago. This view from the south shows the western and northern caldera rims, which reach up to 500 m above the lake. The base of the caldera is 380 m below the lake surface.
Photo by Lee Siebert, 1977 (Smithsonian Institution).
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.