Technology has saved us money in some circumstances, but it has really afforded us the ability to cover stories from locations we might not have been able to in the past.
"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.