Aokigahara Forest (Jukai) 青木ヶ原樹海
Here a compass deviates only if it is placed on the lava: that is not why walkers get lost.
The forest covers about 30 km² between Lakes Saiko, Shōji and Motosu, on the north-western slope of Fuji, inside Fuji-Hakone-Izu National Park. It was formed by the lava flow of 864, the Jōgan eruption that covered the north-west slope of Fuji and buried the ancient Lake Senoumi, leaving only two fragments of it, today's Lakes Saiko and Shōji. The forest has been a national Natural Monument since 1926 under the name ‘富士山原始林及び青木ヶ原樹海’; the two caves have both been national Natural Monuments since 17 December 1929.
Yamanashi
51.Fugaku Fuketsu (wind cave)
