"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.
When you actually crack a prostitution ring or crackdown on junkets, that's always going to create a lot of headlines. Short term, it might be painful to see these unsavory things.