"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.
Heart and head are the constituent parts of character temperament has almost nothing to do with it, and, therefore, character is dependent upon education, and is susceptible of being corrected and improved.