A two hectare glacial lake in Chile's southern Andes has disappeared -- and scientists want to know why.
Park rangers at Bernardo O'Higgins National Park said they found a 100-feet-deep crater in late May where the lake had been in March.
"The lake had simply disappeared," Juan Jose Romero, head of Chile's National Forest Service in the southernmost region of Magallanes, said. "No one knows what happened".
A group of geologists and other experts will be sent to the area 2000 km southeast of Santiago in the next few days to investigate, Romero said.
One theory is the water disappeared through cracks in the lake bottom into underground fissures.
But experts do not know why the cracks would have appeared because there have been no earthquakes reported in the area recently, Romero said.
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