Akiyoshido Cave
Japan's largest limestone cave stretches 8km, with 1km open to visitors. Stalactites, underground rivers, and cathedral chambers formed over 300 million years.
1.5–2 hours
¥1,600 (adult & high school), ¥1,300 (junior high), ¥850 (elementary). As of Oct 2024
8:30–17:30 (Mar–Nov); 8:30–16:30 (Dec–Feb)
Year-round
Bus from Shin-Yamaguchi Station (Shinkansen / JR), about 40–50 min to Akiyoshido Bus Center; then about 10 min walk to cave entrance
Location
Why Visit
- 1
Hyakumai-zara — limestone terraces filled with pale blue water
- 2
Year-round 17°C makes it perfect on hot summer days
- 3
Exit through the hilltop and see the karst plateau from above
Local Tips
The cave maintains 17°C year-round — bring a layer even in summer. Exit near the lower cave entrance, then take the lift up to Akiyoshidai plateau above. The main walkway is paved and stroller-friendly.
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