Akiyoshidai Plateau is near Akiyoshido cave in Yamaguchi.
It is Japan’s largest karst plateau, which is designated the nation’s natural monument.
The limestone that forms its majestic landscape was created about 350 million years ago from coral reefs in the southern sea, which over many years formed the karst plateau that we see today.
It is green in the spring.
But now in autumn it is brown with many Japanese pampas grasses.
The area and its nature are mysterious.