"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.
Any successful nominee should possess both the temperament to interpret the law and the wisdom to do so fairly. The next Supreme Court Justice should have a record of protecting individual rights and a strong willingness to put aside any political agenda.