The broad Adatara massif is composed of a group of cones and lava domes, seen here from the W. The unvegetated area on the left summit ridge is a 1-km-wide circular crater that has been mined for sulfur. Seventy-two miners working in the crater were killed during an explosive eruption in 1900.

Photo by Lee Siebert, 1988 (Smithsonian Institution).

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Adatarayama