Experts investigate mysterious 200-foot-deep sinkhole near copper mine in Chile

Experts in Chile on Tuesday were investigating an enormous sinkhole, bigger than a tennis court, that has appeared near a copper mine in the Atacama desert.

Experts were dispatched to examine the hole, some 32 meters (104 feet) in diameter and twice as deep, which appeared in an area nearly 500 miles north of Santiago over the weekend, the National Geology and Mining Service (Sernageomin) said in a statement.

A 100-meter security perimeter has been erected around the hole in the Tierra Amarilla municipality, near the Alcaparrosa mine operated by Canadian firm Lundin Mining.