Usual hours and prices, checked 2026-10-05 against the sources under “What this place is”. They can change for holidays and events — confirm before you go. Official site
Our guide
Akiyoshi-dō is one of the largest limestone caves in Japan, 100 to 200 m beneath the Akiyoshi Plateau in eastern Mine, Yamaguchi. Visitors follow a route about 1 km long, and an underground river runs about the same distance from Kotogafuchi, deep inside, to the entrance; surveys have traced the cave for 10,300 m in all. It became a Natural Monument in 1922 and a Special Natural Monument in 1952, and lies within Akiyoshidai Quasi-National Park.
The plateau above has its own page, Akiyoshi plateau, about 1.7 km away in a straight line. We have not checked opening hours, fees or a public-transport route.
Written by japan-spots.com (2026-09-22) from the sources credited on this page. Distances are straight lines between map positions.
Photos
Photos from Wikimedia Commons, each under its own licence — see credits
- Akiyoshi-doCave — a.fijii · Public domain · source · resized
- Elevator entrance of Akiyoshi Cave — そらみみ (Soramimi) · CC BY-SA 4.0 · source · resized
- Akiyoshido kanko center — おんさき · CC BY 3.0 · source · resized
- Akiyoshi-dou 秋芳洞 (2248198193) — Yamaguchi Yoshiaki from Japan · CC BY-SA 2.0 · source · resized
- Akiyoshi-dou 秋芳洞 (2246778236) — Yamaguchi Yoshiaki from Japan · CC BY-SA 2.0 · source · resized
- Stela of Akiyoshi Cave — そらみみ (Soramimi) · CC BY-SA 4.0 · source · resized
- Inagawa River near Akiyoshi Cave 4 — そらみみ (Soramimi) · CC BY-SA 4.0 · source · resized
- Inagawa River near Akiyoshi Cave 3 — そらみみ (Soramimi) · CC BY-SA 4.0 · source · resized
- Inagawa River near Akiyoshi Cave 2 — そらみみ (Soramimi) · CC BY-SA 4.0 · source · resized
- Inagawa River near Akiyoshi Cave 5 — そらみみ (Soramimi) · CC BY-SA 4.0 · source · resized
What this place is
Akiyoshi-dō (秋芳洞) is a limestone cave 100–200 m beneath the Akiyoshi Plateau in eastern Mine, Yamaguchi Prefecture, open to visitors along a route about 1 km long; it is one of the largest limestone caves in Japan. An underground river runs about 1 km from Kotogafuchi deep inside to the entrance. Surveys have extended its known length to 10,300 m. It was designated a Natural Monument in 1922 and a Special Natural Monument in 1952, and lies within Akiyoshidai Quasi-National Park.
Visitor information checked: 2026-10-05 · 秋芳洞｜秋吉台の地下に広がる日本最大級の大鍾乳洞 【公式】山口県観光/旅行サイト おいでませ山口へ
Background text translated from Japanese Wikipedia (CC BY-SA 4.0)
What to expect at this type of place: Landmark
Getting there
We do not have step-by-step transit directions for this spot yet. Open the location on Google Maps for routes from where you are staying.
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