Akkadō
Akkadō (安家洞) is a limestone cavern located in the town of Iwaizumi, Iwate Prefecture in the Tōhoku region of northern Japan. It has a measured length of 23,702 metres (77,762 ft), which makes it the longest in Japan.[1] The cave system was designated as a Natural monument by the Japanese government in 1980. Since 1991, a portion of the caverns have been open to the public for part of the year.
| Akkadō | |
|---|---|
| 安家洞 | |
 Inside the Akkadō | |
  | |
| Location | Iwaizumi, Iwate Prefecture, Japan |
| Coordinates | |
| Depth | 280 meters |
| Length | 23,702 meters |
| Geology | limestone |
| Access | public |
| Show cave length | 700 meters |
| Website | Official website |
References
- Archived 2012-07-09 at the Wayback Machine Journey to the Center of the Earth
External links
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