Eruptions of New Fuji exhibit phenomena such as lava flows, magma, scoria, volcanic ash, collapses and side eruptions, leading it to be called "a department store of eruptions". It created many explosive eruptions that threw out large amounts of scoria, volcanic ash and lava.įollowing the Old Fuji period, there were about 4,000 years of inactivity, ending at around 5,000 years ago, when Mount Fuji became active again this period is known as New Fuji ( 新富士, shinfuji ), and continues to the present day. This created a new volcano known as Old Fuji ( 古富士, kofuji, Old Fuji) that reached a height of 3,100 meters (10,200 ft). Komitake entered another period of activity around 100,000 years ago. The peak of Komitake is about 2,300 meters (7,500 ft) above sea-level on the north face of Mount Fuji (at the fifth station).
Another volcano to the south-east of Mount Fuji-known as Mount Ashitaka ( 愛鷹山)-was also highly active throughout the period. The earliest geologically known volcano was Mount Komitake ( 小御岳火山, small mountain volcano) that became active 700,000 years ago. There has been volcanic activity in the vicinity of Mount Fuji for several million years. Under the "New Fuji volcano" lies the "Old Fuji volcano", which was active between 100,000 years ago and 10,000 years ago, and the "Komitake volcano", which became active 700,000 years ago. The mountain as it appears now is known as the "New Fuji volcano", which began to erupt about 10,000 years ago. The latest eruption of Mount Fuji was triggered by an earthquake in 1707. Mount Fuji is an active volcano which is the tallest peak in Japan.
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