Komitake
There has been much volcanic activity in the vicinity of Mount Fuji for several million years. In the location occupied by the current Mount Fuji, a volcano known as Mount Komitake (小御岳火山?), literally meaning "small mountain volcano", became active 700,000 years ago. Around this time, another volcano, Mount Ashitaka (愛鷹山?), in the area to the south-east of Mount Fuji, was also highly active. The peak of the ancient volcano, Komitake, can be seen from the north face of Mount Fuji at the fifth station, about 2,300 meters (7,500 ft) above sea-level.
Read more about this topic: Historic Eruptions Of Mount Fuji