"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.
Truth is tough. It will not break, like a bubble, at the touch, nay, you may kick it about all day like a football, and it will be round and full at evening.
I do know a lot about Scientology. And I know about the practices. I know all about what the technology is and all that kind of stuff. It's very helpful.