Akiyoshido Cave
Map
Akiyoshido is a limestone cave spreading 100 to 200 m underground beneath the Akiyoshidai limestone plateau in Mine, Yamaguchi Prefecture. Its total length of 10,300 m is among the largest in Japan, and it was designated a Natural Monument in 1922 and a Special Natural Monument in 1952. An underground river flows for about 1 km, and countless stalactites and stalagmites create a magnificent landscape.
Nature Info
- Type
- Limestone cave
- Elevation
- 100-200m below the Akiyoshidai plateau; tourist route in the cave is about 1km long; total length 10,300m
- Access
- About 40 minutes by bus from JR Shin-Yamaguchi Station
History & Origins
It is said to have been opened by a Zen priest in 1354, and was developed as a show cave in 1909. In 1926 the Crown Prince at the time (later Emperor Showa) visited, and the cave was renamed 'Akiyoshido,' its present name, on that occasion.
Highlights
The largest hall in the cave, 'Senjojiki,' measures 175 m long, 80 m wide, and 35 m high. A variety of topographic features can be seen, including the underground lake of Kotogafuchi and the travertine terraces called 'Hyakumaizara' (hundred plates). Endemic species and bats also live here.
Visitor Guide
The sightseeing route is about 1 km and takes about 50 minutes on foot. An elevator also lets you come out onto the Akiyoshidai plateau. The temperature inside the cave stays around 17 C throughout the year, so a jacket is comfortable even in summer.
Best Season
The temperature inside the cave stays comfortable regardless of the season, so it can be visited all year round. On the plateau above, spring (Kirishima azaleas) and the grassland scenery after the autumn controlled burning are also highlights.
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