"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.
What is exciting is not for one person to be stronger than the other... But for two people to have met their match and yet they are equally as stubborn, as obstinate, as passionate, as crazy as the other.