"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.
While I had often said that I wanted to die in bed, what I really meant was that in my old age I wanted to be stepped on by an elephant while making love.