Neighborhood Shocked To Learn Their Homes Are Built Over A Collapsing Gypsum Mine
A photo of the sinkhole in Blackhawk, South Dakota. (Arielle Zionts) At a Glance A sinkhole in Blackhawk on April 27, South Dakota has now left a total of 12 families displaced. An abandoned car was found in the sinkhole.It is uncertain if developers or a government agency knew the Blackhawk community was being built on top of an old mine. Several homes in the Rapid City area were evacuated after a sinkhole opened into an abandoned gypsum mine located...