Nao Iizuka / CC BY 2.0

A roughly 3,500 m illuminated limestone show-cave on Okinoerabu — one of Japan's largest cave systems — with flowstone curtains, stalactites and an underground stream.

Best season

Year-round

Crowd level

Hidden gem

Rating

4.4· 207 reviews

Opening hours

9:00-17:00 (last entry 16:20), closed Tuesdays

Usual hours — confirm with the official site for holidays + seasonal closures.

Nearest station

Okinoerabu (Wadomari) port + car

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