Global Volcanism Program | Image GVP-05623
Kuttara volcano consists of a 3-km-wide, lake-filled caldera seen here from the W, near the Pacific coast of Hokkaido. Post-caldera eruptions have produced a series of explosion craters on the west flank. Thermal activity associated with these craters has produced large areas of hydrothermally altered ground seen at the bottom of the photo. The resort town of Noboribetsu Spa is visible at the lower center.
Photo by Yoshio Katsui, 1996 (Hokkaido University).