Chile Investigates Large Sinkhole That Appeared Mysteriously. 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 north of the capital Santiago.The National Service of Geology and Mining became aware of the sinkhole on Saturday, July 30 and have sent specialist personnel to the area, the agency’s director David Montenegro said in a statement.
ABC7
WHAT IS A SINKHOLE:
A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are locally also known as vrtače and shakeholes, and to openings where surface water enters into underground passages known as ponor, swallow hole or swallet. A cenote is a type of sinkhole that exposes groundwater underneath. A sink or stream sink are more general terms for sites that drain surface water, possibly by infiltration into sediment or crumbled rock.
WIKIPEDIA
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