"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.
I think that the romantic impulse is in all of us and that sometimes we live it for a short time, but it's not part of a sensible way of living. It's a heroic path and it generally ends dangerously.