The Narusawa Ice Cave (Narusawa Hyoketsu) is designated as a natural monument of Japan and is located in Yamanashi prefecture, near Mount Fuji. It is a concentric-vertical cave and is 153 m long.
Photo: gomafringo on FlickrThe average temperature inside the cave is around 3 degrees celsius, which is cold enough to keep the cave covered with ice all year long.
The highlights of the Narusawa Ice Cave are the ice pillars, formed by water slowly dripping from the ceiling.
Photo: gomafringo on flickr
The cave was formed by flows of lava from a massive volcanic eruption 1130 years ago.
Photo: f59t8y on FlickrThe ceiling is low, so watch your head. Helmets are available for free use at the counter, are are recommended.
Fugaku Wind Cave & Narusawa Ice Cave
Admission: 350 yen for adults, 200 yen for elementary-age children
Hours: Generally 9:00 - 17:15 (both weekdays and holidays), but check their website below for any changes before visiting.
Directions: The nearest train station is Kawaguchiko Station on the Fujikyuko Line. From there take a bus bound for Shimobe Onsen Kyo, and get off at the Hyoketsu bus stop. From there it's 10 minutes on foot to the cave.