Akkadō
安家洞
Inside the Akkadō
Map showing the location of Akkadō
Map showing the location of Akkadō
LocationIwaizumi, Iwate Prefecture, Japan
Coordinates39°59′1.1″N 141°44′10.05″E / 39.983639°N 141.7361250°E / 39.983639; 141.7361250
Depth280 meters
Length23,702 meters
Geologylimestone
Accesspublic
Show cave length700 meters
WebsiteOfficial website

Akkadō (安家洞), located in Iwaizumi, Iwate Prefecture in the Tōhoku region of northern Japan, is the longest limestone cavern in Japan, with a measured length of 23,702 metres (77,762 ft).[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.

Outline

There are flowstones and a subterranean lake.

Access

References

  1. Archived 2012-07-09 at the Wayback Machine Journey to the Center of the Earth

Media related to Akkado at Wikimedia Commons

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