"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.
Saturdays and Sundays, America in the year 2009 does not in some ways differ significantly from the country that existed almost 50 years ago. This is truly sad.