Global Volcanism Program | Image GVP-03003
Snow-capped Halla shield volcano is seen here from the north, near Cheju city, the largest on Cheju Island. Voluminous lava flows and an underlying lava plateau form the entire 40 x 80 km island. The volcano is capped by the 400-m-wide Backlockdam summit crater and its flanks contain hundreds of cones, some of which form small offshore islands.
Photo by Norm Banks, 1980 (U.S. Geological Survey).
This image is made available as a Public Domain Work, but proper attribution is appreciated.