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| This undated image provided by the Belize Tourist Board shows an aerial view of the Great Blue Hole, a popular diving site that's part of Belize's barrier reef. (AP Photo/Belize Tourist Board) |
◼ Everything from overhunting and a peasant uprising to deforestation and an alien invasion has been proposed to explain why the Mayan civilization collapsed, Smithsonian notes. But one theory has been gaining ground in recent years: extreme drought. - FOX
Now more evidence has surfaced to support the drought postulation—and the proof may just lie in Belize's most famous underwater cave. Rice University professor Andre Droxler's team analyzed sediment found in the "Great Blue Hole," a 410-foot-deep sinkhole in the middle of Lighthouse Reef, LiveScience reports.
Not only did the chemical composition of the silt indicate periods of sparse rainfall during the Mayan decline (likely between AD800 and AD1000): It also showed that a second huge drought probably occurred between AD1000 and AD1100—right around the time the Mayans' relocation site of Chichen Itza is said to have fallen.
