Illinois Football Field Sinkhole Blamed on Underground Mine - TaiwanPlus News
Residents of an Illinois city say a massive sinkhole that opened up in their football field was like something out of a movie. The 30 metre wide, 9 metre deep sinkhole swallowed bleachers and a light pole in the city of Alton. No one was hurt in the collapse, but teams had been on the field days before. Local news sources say the operators of a limestone mine under the field had reported what they called surface subsidence. That's when soil on the surface collapses downward into gaps left by mining or drilling.