Chilean authorities investigate mysterious large sinkhole near copper mine

Chilean authorities started investigating on Monday a mysterious sinkhole about 25 meters (82 feet) in diameter that appeared over the weekend in a mining
area in the north of the country.
Chilean media showed aerial images of the sinkhole on land operated by a Canadian Lundin Mining copper mine, about 665 kilometers (413 miles) north of capital Santiago.
The National Service of Geology and Mining (Sernageomin) became aware of the sinkhole on Saturday and has sent specialist personnel to the area, the agency’s director David Montenegro said in a statement.
“There is a considerable distance, approximately 200 meters (656 feet), to the bottom,” Montenegro said. “We haven’t detected any material down there, but we have seen the presence of a lot of water.”