Akiyoshido Cave – Japan (10/20)

With over 10 kilometers (6.2 miles) of passageways, Akiyoshido is Japan’s largest limestone cave. The cave is famous for its vast size and its stunning features, including massive stalactites, stalagmites, and the largest cavern hall in Japan, known as the “Akiyoshido Great Hall.” The cave is part of the Akiyoshidai Plateau, which is also home to other unique geological formations.