"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 know the world is filled with troubles and many injustices. But reality is as beautiful as it is ugly. I think it is just as important to sing about beautiful mornings as it is to talk about slums. I just couldn't write anything without hope in it.