The Shitodo Hidden Caves, offer a bit of colorful history of the region even if the site is easy to miss unless you are deliberately looking for them.
At one time the rock face which houses them was at sea level, and they were formed by the relentless pounding of the ocean surf. Eventually a powerful earthquake raised them up to their current location, creating a cavern where individuals could live in cognito, reasonably safe from the enemy.
In fact, the Shogun Minamoto no Yuritomoto took refuge here after loosing a battle in the year 1180. In the present day the cave does not extend very far into the mountain, the depth is believed to have been about 130 meters at the time that the Shogun was hiding out.
Unless you are a Japanese history buff, it may not be worth the special trip, but it is worth a brief stop-by if you are already walking around the area.More