"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.
Whatever possessions and objects of its desires the lower self may obtain, it hangs on to them, refusing to let them go out of greed for more, or out of fear of poverty and need.