More exciting: Underground exploration tour of AKKADO Cave, Japan’s longest labyrinth-shaped limestone cave
20230906 シンディー Today, I will introduce Japan’s longest cave which is named “Akkado”. Akkado Cave is located in the upper right corner of Iwaizumi Town, Iwate Prefecture, and is designated as a national natural monument in Japan. It is the longest cave in Japan with a total length of 23.7 kilometers, but its full picture …