Volcanic mountain on the north side which you can climb in about 45-60 minutes from road that circles higher up the mountain. There is a small place for cars to park about 1/2km on the left after you turn right at the T-junction when coming up from the town. Superb views of the island on a clear day.
Location
Mt. Hachijo-Fuji Hiking Trail Entrance, Mitsune, Hachijo, Tokyo 100-1511« Google Maps »