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Akan Volcano - John Seach
Hokkaido, Japan
43.38 N, 144.02 E
summit elevation 1499 m
caldera
Akan volcano is a 24 x 13 km diameter caldera with a group of andesite cones. The summit is Ponmachineshiri.
Nakamachineshiri crater in the center of the volcano and Ponmachineshiri crater have active fumaroles. At least 17 phreatic eruptions have occurred since 1900's.
The largest eruption was in 1956 with the emission of 70,000 cubic m of tephra.
Lake Akan is located in Akan National Park. It contains a rare green algae (marimo) which can grow to about the size of a soccer ball. The lakeside hot spring resort of Akankohan is the only town around the lake. Bokke are bubbling mud pools on the side of the lake.
Akan Volcano Eruptions
2006, 1988, 1966, 1965, 1964, 1962, 1960, 1959, 1958, 1957, 1956, 1955, 1954,
1951?-52, 1927?, 1808?, 1800.