Our country also hungers for leadership to ensure the long-term survival of our Social Security system. With 70 million baby boomers in this country on the verge of retirement, we need to take action to shore up the system.
"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.