From CNN: and AP:
A five-acre 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. Several large pieces of ice that used to float atop the water also were spotted.
"The lake had simply disappeared," Juan Jose Romero, head of Chile's National Forest Service in the southernmost region of Magallanes, said Wednesday. "No one knows what happened."
(Rest of story at above link).