"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.
In the Northern Hemisphere, February is the third month of winter. Meanwhile in the Southern Hemisphere, February is the last month of summer. Between the North and South Hemispheres, February is the equivalent of August.