How to get there
- Where it is Yamaguchi (山口県), Japan. Getting into the prefecture: Yamaguchi-Ube Airport · Shin-Yamaguchi Station (shinkansen) · 30 min from Hakata
- By car What you need to drive here
- Last train When the trains stop
Akiyoshido秋芳洞 — Yamaguchi
The largest limestone cave in Japan. A kilometre is lit and level, and it stays cool all summer.