"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.
Addiction should never be treated as a crime. It has to be treated as a health problem. We do not send alcoholics to jail in this country. Over 500,000 people are in our jails who are nonviolent drug users.