"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.
Sometimes I've been to a party where no one spoke to me for a whole evening. The men, frightened by their wives or sweeties, would give me a wide berth. And the ladies would gang up in a corner to discuss my dangerous character.
