Mt. Nantai

Mount Nantai literally "man's body mountain", also called Futara-san is a stratovolcano in the Nikkō National Park in Tochigi Prefecture, on central Honshū, the main island of Japan. It stands at 2,486 m high. A prominent landmark, it can be seen on clear days from as far as the Pacific coast, 100 km away.

Source: Wikipedia