Kometsuka has a very beautiful form by the marks of a lovely small volcanic cone. It is thought that Kometsuka is one of the newest things also in the volcano in Aso, and was made about 1000 years ago. It is only about 80 m from under the mountain up to a summit by the altitude of 954 m. The remains of a crater remain in the summit as a hollow about 100 m in diameter, about depth 20m It is said that God of Aso accumulated harvest rice and became a mountain as a tradition of tKometsuka. , and the hollow of the summit was made since God divided rice and gave it into poor people . Now, mountain climbing is forbidden.