as a volcano

 Whenever Mt. Fuji which is an active volcano erupts, people have had the life threatened. It has been quiet since the eruption in 1707, development at the foot of a mountain progresses, and citizens are increasing in number. The damage caused by the next eruption is anxious. I do not develop Mt. Fuji but think that beautiful nature should be placed without attaching a hand as it is. It is said that it is 3 million years ago that the prototype of Mt. Fuji appeared.
  The outskirts of Mt. Fuji before that are still a marine bottom, and there was just a Pacific wave. It seems that  Akaishi Mountain landstands in a row north at Osaka Mountain land, and stood in a row in Tanzawa　Mountain land　and the west east when the situation around Mt. Fuji of 5 million years ago was seen in literature.Thus, since it was born from the marine bottom, there are no mountains close, and Mt. Fuji could become independent Mine. Mt. Fuji is located in four plate boundaries, the Pacific plate, a Philippine plate, North American Plate, besides the Eurasia plate. Therefore, huge energy is conserved from underground and it spouts on the ground. That is, it is an eruption. Asitaka volcano and  Komitake volcano began activity 400,000 years ago. It means that two volcanoes were born at the place different from the position of the present Mt. Fuji crater.
  Days and months passed, two volcanoes stopped activity, and the Kofuji volcano started activity between the grounds which both volcanoes generated.The lava of Mt. Fuji has good mobility and is suitable for forming a conical volcano. The lava flow and volcanic ashes are accumulated on the foundation of  Asitaka volcano and Komitake volcano, and Mt. Fuji obtains the altitude. This is a reason that Mt. Fuji became high. The Kofuji volcano repeats an explosive eruption and it is said that the altitude also became about 3,000 m.
  The eruption of the Shinfuji volcano began from the summit of the mountain of the Kofuji volcano. It is the beginning of the eruption which forms present Mt. Fuji. The eruption of the Shinfuji volcano was a volcano which passes a lava flow unlike the eruption of the Kofuji volcano. It is said that Mt. Fuji will be a volcano of adolescence if it says by man. The eruption of forms various also in the past has been repeated. The eruption of the last of about 300 years ago was a Burukano type eruption which does not pour lava. Now, a hazard map of Mt. Fuji is created and it is appealing for cautions to the local resident.
  How does that the last eruption was a Burukano type influence future eruption anticipation? Houei eruption took place in 1707. This eruption was a characteristic eruption, such as starting 49 days after Houei earthquake which is the greatest earthquake in Japan, and dropping a lot of volcanic ashes.  After the major volcanic eruption of Houei, although there was no large-scale volcanic activity in Mt. Fuji, gas emission activities were behind. Now, gas emission activities are not accepted near the summit of the mountain.  Present Mt. Fuji has become silent from the eruption of Houei in about 300.There is no record of an eruption 400 years or more from 1083 till 1511.     Moreover, Houei eruption or later in 1707 does not erupt for about 300 years, but the peaceful state continues.