"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.
In the last few years, the very idea of telling the truth, the whole truth, and nothing but the truth is dredged up only as a final resort when the alternative options of deception, threat and bribery have all been exhausted.