Conaf requested help from geologists to find out what happened to the lake, located some 2 thousand kilometers southeast of Santiago, the National Park Huemules, as the regional body's chief, Juan Jose Romero, who said that the professionals visit the area in 10 days.
The disappearance of the lake was discovered last May 27, but was informed on Wednesday.
Romero said that a patrol of five officers Conaf in a usual route, monthly, found that the ice of various sizes and does not float over the year in the waters of the lake, but were deposited at the bottom of a large crater.
"They found the huge surprise that the lake had simply disappeared. And we're not talking about a small lake, but rather big and the icebergs that had the lake were usually there, but stranded in the dry bed of what was lake and the disappeared overnight, "Romero told.
He said "the icebergs were quite large and are still there in the dry bottom of what was once the lake," said Romero.
At the lake had no fish because it was water of glacial origin.
The official added that in the bottom of the pit there are huge cracks or cracks. "We do not know what happened, everybody speculates," he said.
But not only the lake disappeared, but a flowing river that flows into the lake, today is nothing more than a simple stream.
"You can walk through," said Romero. The river was about 40 meters wide and about six or seven miles long.