"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.
For me, at least, there came moments when faith wavered. But there is the great lesson and the great triumph: keep the fire burning until, by and by, out of the mass of sordid details there comes some result.
When you have a background in combat sports, people think you're this martial arts expert, but really I'm just a guy who is able to do certain things without making a mess of himself.