These two shots are from the top of Wave Subduing Hill.
Reminded me of Wayna Pichu in Peru.
Watched an Italian party climb to the top.
Got to the summit in 35c heat completely breezeless, in the heat of the sun, then walked all the way back down again.
Hot and bothered and All willing to pay 5 yen for a bottle of water by the time they got to the bottom.
There are some caves and a couple of artisans. Simply follow the river north to visit this spot.