"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.
Most of the good executives do pretty well. Because to be a good executive you have to be strong, and you have to have a simple attribute that people have forgotten about - courage.