"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.
When I saw all those other drivers, I realized that they wanted to win that money just as much as I did. But I didn't have to worry. A tire came off my car and I was lucky I got it off the track.