Oakan is prominently located at the Northeast side of the caldera, while Meakan occupies the opposite, Southwest side, in a cluster of nine stratovolcanoes that include Akan-Fuji, one of many symmetrical Japanese volcanoes named after the renowned Mount Fuji, and Fuppushi volcano (a.k.a. Fuppushi-dake, not to be confused with Mount Fuppushi, which is located in Southwestern Hokkaido).