Research shows soil in the quarry where the figures came from was highly fertile.
The traditional narrative of the island's history suggests that the local people destroyed their own society through infighting and overexploitation of natural resources, while a new study suggests a society with a high level of collaboration.
The largest of these strange stone hats, called pukao, weighs 25,000 pounds.
Stories say the people of Easter Island's destroyed the landscape before turning to cannibalism. The truth is far more sinister.
Researchers established the maximum possible population size for the isolated island's civilization in its heyday.