Oyu Cave (Japan)
Fujiwara, Minakami-machi, Tone-gun 379-1721 Gunma Prefecture

Abukumado Limestone Cave (Japan)
1 Takinemachisugaya, Tamura 963-3601 Fukushima Prefecture

Umbuki (Japan)
Asama Near Tokunoshima Airport, Amagi-cho, Oshima-gun 891-7605 Kagoshima Prefecture

Toro Cave (Japan)
Tenkawa-mura, Yoshino-gun Nara Prefecture

Ryukeido Cave (Japan)
Yatsukacho Terazu, Matsue 690-1407 Shimane Prefecture

Nobesawa Ginkodo (Japan)
Ginzanshinbata, Obanazawa Yamagata Prefecture

Osawa Limestone Cave (Japan)
1195 Kariwa Osawa Otsu, Gosen 959-1756 Niigata Prefecture

Ufuyaguchi Limestone Cave (Japan)
Kikai-cho, Oshima-gun 891-6200 Kagoshima Prefecture

Blue Cave (Japan)
Shioya, Otaru 048-2672 Hokkaido

Christian Cave (Japan)
Wakamatsugo, Shinkamigoto-cho, Minamimatsura-gun 853-2301 Nagasaki Prefecture

Ryusendo Limestone Cave (Japan)
1-1 Iwaizumi Kaminari, Iwaizumi-cho, Shimohei-gun 027-0501 Iwate Prefecture

Iwaya Kannon Cavern (Japan)
Mikawamachi Nekasa Goso-ji Temple, Iwakuni 740-0505 Yamaguchi Prefecture

Ahashagama (Japan)
Higashiemae, Ie-son, Kunigami-gun 905-0502 Okinawa Prefecture

Matsuda Limestone Cave (Japan)
Matsuda, Ginoza-son, Kunigami-gun 904-1301 Okinawa Prefecture

Niyatiya Cave (Japan)
Ie-son, Kunigami-gun Okinawa Prefecture

Kumaya Cavern (Japan)
Dana, Iheya-son, Shimajiri-gun 905-0701 Okinawa Prefecture

Totsui Limestone Cave (Japan)
646 Totsui, Yura-cho, Hidaka-gun 649-1134 Wakayama Prefecture

Miten Uza (Japan)
2768 Yonashiromiyagi, Uruma 904-2423 Okinawa Prefecture

Jyane Caves (Japan)
Yonashiroyakena, Uruma 904-2304 Okinawa Prefecture

Akasaki Limestone Cavern (Japan)
678 Higashiku Bakuya, Yoron-cho, Oshima-gun 891-9306 Kagoshima Prefecture