"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.
A man is not rightly conditioned until he is a happy, healthy, and prosperous being and happiness, health, and prosperity are the result of a harmonious adjustment of the inner with the outer of the man with his surroundings.