Okinawa is the prefecture with the most caves in Japan. Most of it is composed of reef limestone which is karstified. There are about 600 known caves in the prefecture, with 16 caves open to the public.
Daisekirinzan
Cave Okinawa
Futenma Cave
Valley of Gangala
Gyokusen-do
Hoshino-no ana
Iriyuji-Gama Cave
Janeh Cave
Former Japanese Navy Underground Headquarters
Kin-nisshu-do
Gold Cave Café and Bonsai Garden
Kumaya Cave
Matsuda Limestone Cave
Nakabari Limestone Cave
Niya-Thiya Cave
Shimuku Gama Cave
Tera Cave
Toriike Pond
Uduigama
Yajagama Cave
Yamashita First Cave
Ishigaki Island
Ishigaki Do
Ryujin Limestone Cave
Sabichi Cave
Yaeyama Limestone Cave