Nanatsugama is designated as a natural monument of Japan. The geometric pattern of the rock surface was formed by the cooling and solidifying of lava. That process, along with the natural erosion caused by the waves from the Genkai Sea is what created the beautiful columnar structure that we see today. The largest cave is approximately three meters high, and around 110 meters long. When the weather permits, visitors can take a boat into the caves!
There are a handful of walking paths that visitors enjoy taking. Try to find the elephant’s nose, or the spectacles shaped rock. Be careful though! The views are incredible, but some paths are very close to the cliff’s edge.