"Ahu" are stone platforms on which many moai sit. There are 313 known ahu and 125 of these carry moai. The biggest, Ahu Tongariki is 220 m (720 ft), and had the most (15) and tallest moai.
I was emotionally and physically punched in the stomach. This is not a place where you go and deliver the lines and then you come back. It's kind of a life-changing experience. But it can't get better than this for any actor - this is like an opera.