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| The Akiyoshi Karst Plateau is the largest limestone plateau in Japan, and is a designated Special Natural Monument. The limestone formations jutting up across the landscape are called Karren; there are also sinkholes, called Doline. This limestone was formed during the Paleozoic age, as a coral reef. |
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Big Flowstone formation, inside the Akiyoshi-do Cave. Unfortunately, this cave is so vast that most of the formations are too far away for a standard camera flash to work. But, there were some impressive cave formations, here! |
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| View of the Akiyoshi-do main cave entrance, from inside the cave! | View of the main entrance to Akiyoshi-do Cave, from the outside! |
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