"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.
It is Barack Obama who is at war with this country. Recent events prove it. This is not a cliche. It's not a figure of speech. Obama is at war with the U.S. Economy.