Fugaku Fuketsu

Fugaku Wind Cave - Fuji Wind Caves

Useful Information

Location: North of Mt. Fuji, south of lake Saiko. From Narusawo Road 139 west for 4 km.
(35.477985643313474, 138.657089994959)
Open: All year daily 10:30-16:30, last entry 16.
Fee: Adults JPY 350, Children JPY 200.
Groups (15+): Adults JPY 250, Junior High School JPY 200, Children JPY 100.
Classification: Speleologylava tube SpeleologyIce cave
Light: LightIncandescent Electric Light System
Dimension: L=201 m, H=8.7 m, T=-2 °C/+3 °C.
Guided tours: L=200 m, D=15 min.
Photography: allowed
Accessibility: no
Address: Fugaku Fuketsu, Saiko, Fujikawaguchiko-machi, Minamitsuru-gun, Yamanashi Aokigahara 2068-1, 401-0332, Tel: +81-555-85-2300.
As far as we know this information was accurate when it was published (see years in brackets), but may have changed since then.
Please check rates and details directly with the companies in question if you need more recent info.


864 lava tube formed during a volcanic eruption of Mt. Fuji by the Aokigahara Maruo lava stream.
1929 designated a Natural Monument of Japan.
2012 souvenir shop at the entrance reopened after renovation.


Fugaku Fuketsu (Fugaku Wind Cave) is a lava tube located on the northern slopes of Mt. Fuji, the holy mountain of Japan. It was formed by a lava flow from this volcano. The cave contains ice in the central part. Its temperature is between 0 °C and 3 °C, a result of the entrance pit which works as a cold trap, cold air flowing in during winter is trapped inside the cave. Between the 17th and 1955 the cave was used to keep the eggs of silk worms (Bombyx mori).