Easter Island Unsolved

剧情：

Easter Island is one of the most isolated inhabited islands on Earth, and a riddle. What happened to the Rapa Nui who populated this ancient Eden? They carved giant statues, the moai, and created a culture of cooperation. Then something failed. Modern explorers investigate labyrinthine cave systems, finding grim clues. Now another sad fate may be in the island’s future – total disappearance.