The Narusawa Ice Cave and the Fugaku Wind Cave are lava tubes in the Aokogahara Woodland (forest) at the northern foot of Mount Fuji. The Ice Cave is located in Narusawa village and the Wind Cave is in Fujikawaguchiko town, Yamanashi Prefecture, Japan.
Narusawa Ice Cave https://en.wikipedia.org/wiki/Narusawa_Ice_Cave
Fugaku Wind Cave https://en.wikipedia.org/wiki/Fugaku_Wind_Cave
Narusawa Ice Cave, Narusawa, Yamanashi, 2/12/2025
Fugaku Wind Cave, Kawaguchiko, Yamanashi, 2/12/2025
Aokigahawa Woodland between Narusawa Ice Cave and Fugaku Wind Cave, Narusawa and Fujigawaguchiko, Yamanashi, 2/12/2025
Also, please refer to the article on May 15, 2018 (https://yamanashietsuo.net/fugaku-wind-cave-and-narusawa-ice-cave-aokigahara-woodland/).