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Category
Attraction
Location
3506-2 Shūhōchō Akiyoshi, Mine, Yamaguchi 754-0511, Japan
Featured in 6 courses
Akiyoshido Cave in Yamaguchi Prefecture is Japan's largest limestone cave, stretching over 10.7 km in total length. The cave maintains a constant temperature of around 17°C year-round, with a 1 km sightseeing route revealing cobalt-blue underground streams, cascading limestone terraces, and dramatic stalactite formations. Above the cave lies Akiyoshidai, Japan's largest karst plateau, making for a spectacular combined visit.
Best Time to Visit
MarAprMayOctNov
Tips
- Access by bus from Shin-Yamaguchi Shinkansen station (approx. 40 min, 1,170 yen); driving is far more convenient.
- Admission is 1,600 yen for adults; an extra 300 yen gets you the adventure path, which is slippery and more challenging.
- Pack a light jacket — the cave stays around 17°C even in summer.
- After the cave, walk up to the Akiyoshidai karst plateau for sweeping grassland views.
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