Nanatsugama Limestone Cave
In Japanese: 七ツ釜鍾乳洞

A cave over 1,600 m long formed in rock raised from the seabed about 30 million years ago. Inside, clear water flows and it stays about 15°C all year.
Natural Monument
Nearby
- Kujukushima Islands ≈ 40 min by car
- Kuroshima Church ≈ 45 min by car
- Shitsu Village, Sotome ≈ 50 min by car
- Onigi Rice Terraces ≈ 55 min by car
- Chiwata Station ≈ 1 h by car
Travel times are rough estimates by car.
- Getting there
- About 25 min by car from Huis Ten Bosch Station (JR Omura Line) via the Saikai Pearl Line and Route 202
Easier with a tour or car - Fee
- Adults 800 yen
- Good to know
- 9:00–18:00 Apr–Sep, 9:00–17:00 Oct–Mar (last entry 30 min before)
- Time needed
- 1 h
Checked against the official Japanese website on 2026-10-12. Report outdated info