Huge Sinkhole Develops South of Knoxville, Iowa

Photo: Marion County

(Knoxville, IA) - Marion County is dealing with a very large sinkhole south of Knoxville. It's 30 feet in diameter and is 20 feet deep, and is near a gravel road. The county has put barricades up in the 1700 block of 135th Place as a precaution. The site is in an area where many coal mines were once located.


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