"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.
People until I was 60 would always say they thought I looked younger, which I think, without flattering myself, I did, but I think I certainly have, as George Orwell says people do after a certain age, the face they deserve.