"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.
The union is much more than me, and when you think the union is you and it's not about who you represent, I think you've sort of lost your morals and focus and the purpose of your leadership.