Sinkhole Disrupts Traffic In Center Of College Of Charleston

The earth opened up on Coming Street, leaving an 8-foot hole in the middle of a main thoroughfare of the College of Charleston campus. The sinkhole stretched 10 feet in diameter and its cause was the collapse of a pre-Civil War brick storm drain. 

https://today.cofc.edu/2021/07/05/geology-professor-explains-cause-of-sinkhole-near-campus/