"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 have a fear of poverty in old age. I have this vision of myself living in a skip and eating cat food. It's because I'm freelance, and I've never had a proper job. I don't have a pension, and my savings are dwindling. I always thought someone would just come along and look after me.