"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.
That's the best way to feed the human mind. That's how Bob Marley did it. He never put it in your face. After you got the groove, you were just singing the hooks, because you thought it was cool.