There are three famous caves on the foot of Mt.Fuji which are wind cave,rat cave and ice cave. The past eruptions of Mt.Fuji and resulting lava flows have created multiple caves.
Narusawa Ice Cave is the cave formed by Lava from Mt.Fuji, located in Aokigahara Jukai(the Sea of Forest). The average temperature is about 37F for all year. The cave is covered with ice all year, and also icicle are every where.
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