Unless action is taken soon - unless we can display the same vision of that earlier period - we will lose the treasure of California's open space and environmental beauty.
"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.