Sinkhole opens up in Marion County Published September 24, 2017 News FOX 35 Orlando Share Copy Link Email Facebook Twitter LinkedIn Reddit MARION COUNTY, Fla. (WOFL FOX 35) - A sinkhole opened up in Marion County on Thursday, September 21st. The sinkhole, located in the median of U.S. 441, lies at the intersection of 148th Street and U.S. Highway 441 in North Marion County.