Akiyoshidai Quasi-National Park in Mine. Here is the largest karst plateau in Japan. There are several hiking trails along the bizarre limestone cliffs.
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| Akiyoshidai Quasi-National Park |
Akiyoshido. One of the largest limestone caves in Japan is located at a depth of 100 m in Akiyoshidai Quasi-National Park. It is known for several amazing rock formations, such as the Hyakumaizar pools - stepped and similar to flat plates.
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| Akiyoshidai Quasi-National Park |
Iwaishima is a small island in the Seto Inland Sea. Its perimeter is only 12 km. It is famous for its unusual walls lined with layers of stone and pure white gypsum. These walls should protect local buildings from strong winds, especially during typhoons.