山口県 · Chugoku Region
Yamaguchi Hidden Gems
2 spots
Yamaguchi· Mine
Akiyoshido Cave — Japan's Largest Limestone Cavern
Akiyoshido Cave (秋芳洞) is Japan's most extensive limestone cave system, with 10.7km of surveyed passages of which 1km is…
cavelimestoneunderground river+2
Updated Jun 2026
Yamaguchi· Mine
Akiyoshidai Plateau — Karst Limestone Wilderness
Akiyoshidai Plateau (秋吉台) is Japan's largest karst landscape — a 130-square-kilometer elevated plateau where thousands o…
karstlimestoneplateau+2
Updated Jun 2026