"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.
Now both my films have been number one at the Australian box office and it took about two years just to get the finance for this film, so if it's hard for me then God help everyone else.