occurred between 17,000 and 8,000 years ago, between 7,000 and 3,500 years ago, and between 4,000 and 2,000 years ago. Flank eruptions, mostly in the form of parasitic cinder cones, ceased in 1707. The largest cone, Omuro-Yama, is one of more than 100 cones aligned NW-SE and NE-SW through the summit. Mt. Fuji also has more than 70 lava tunnels and extensive lava tree molds. Two large landslides are at the head of the Yoshida-Osawa and Osawa-Kuzure valleys. , the volcano is classified as active with a low risk of eruption. The last recorded eruption was the Hōei eruption which started on December 16, 1707 (Hōei 4, 23rd day of the 11th month), and ended about January 1, 1708 (Hōei 4, 9th day of the 12th month). The eruption formed a new crater and a second peak, named Mount Hōei (after the Hōei era), halfway down its southeastern side. Fuji spewed cinders and ash which fell like rain in Izu, Kai, Sagami, and Musashi. Since then, there have been no signs of an eruption. However, on the evening of March 15, 2011, there was a magnitude 6.2 earthquake at shallow depth a few kilometres from Mount Fuji on its southern side. But according to the Japanese Meteorological Service there was no sign of any eruption. Recorded eruptions About 11,000 years ago, a large amount of lava began to erupt from the west side of the top of the ancient Fuji mountain. This lava formed the new Fuji which is the main body of Mount Fuji. Since then, the tops of the ancient Fuji and the new Fuji are side by side. About 2500–2800 years ago, the top part of ancient Fuji caused a large-scale landslide due to weathering, and finally, only the top of Shin-Fuji remained. There are ten known eruptions that can be traced to reliable records. Current eruptive danger Following the 2011 Tōhoku earthquake, there was speculation in the media that the shock may induce volcanic unrest at Mount Fuji. In September 2012, mathematical models created by the National Research Institute for Earth Science and Disaster Prevention (NRIESDP) suggested that the pressure in Mount Fuji's magma chamber could be 1.6 megapascals higher than it was before its last eruption in 1707. This was interpreted by some media outlets to mean that an eruption of Mount Fuji could be imminent. However, since there is no known method of directly