Ryūsendō
| Ryūsendō | |
|---|---|
| 龍泉洞 | |
Entrance to Ryūsendō | |
| Location | Iwaizumi, Iwate Prefecture, Japan |
| Coordinates | 39°51′37.92″N 141°47′50.21″E / 39.8605333°N 141.7972806°E |
| Depth | 249 meters |
| Length | 3,631 meters |
| Geology | Limestone |
| Access | Public |
| Show cave opened | 1967 |
| Show cave length | 1,200 meters |
| Website | http://www.town.iwaizumi.iwate.jp/~ryusendo/ |
Ryūsendō (龍泉洞) is one of Japan's three largest limestone caverns. It is located in the town of Iwaizumi, Iwate Prefecture, in the Tōhoku region of northern Japan.