Fugaku Wind Cave
富岳風穴
A horizontal lava cave formed by a Mount Fuji eruption, where the temperature stays around 3°C year-round, with ice pillars, lava shelves and a former silkworm egg storage room.
Fugaku Wind Cave lies on the edge of the Aokigahara forest. It is a horizontal lava cave formed by a lava flow from an eruption about a thousand years ago. It is about 200 m long and 8.7 m high, and most of it can be walked upright. It was designated a national natural monument in 1929. The average temperature inside is about 3°C. In spring and summer you can see ice pillars and ice ponds, as well as lava shelves and ropy lava formations. In the early Showa period, the cave was used as a natural cold store for silkworm eggs, and restored storage shelves remain inside. Admission is about ¥500. A combined ticket is available with the Narusawa Ice Cave, about 1 km away, and between the two you can walk the Aokigahara Nature Trail (about 20 minutes). Take the green line of the Lake Saiko sightseeing bus from Kawaguchiko Station, about 30 minutes, to the 'Fūketsu' stop. The cave is wet and cold, so bring a jacket and non-slip shoes even in summer.
Opening hours
About 09:00–17:00 (until 16:00 in winter)
Nearby sights
- Narusawa Ice Cave
- Aokigahara Forest
- Saiko Iyashi-no-Sato Nenba
- Lake Shōji
- Lake Motosu
- Oishi Park
- Lake Kawaguchi
- Lawson Kawaguchiko Station (Mt. Fuji Lawson)