A massive sinkhole that appeared in a football field in Alton, Illinois may be linked to a limestone mine operating in the U.S. city.
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00:00Residents of an Illinois city say a massive sinkhole that opened up in their football field was like something out of a movie.
00:08The 30-meter wide, 9-meter deep sinkhole swallowed bleachers and a light pole in the city of Alton.
00:15No one was hurt in the collapse, but teams had been on the field days before.
00:19Local news sources say the operators of a limestone mine under the field had reported what they called surface subsidence.
00:26That's when soil on the surface collapses downward into gaps left by mining or drilling.