Possible reasons for the appearance of a sink on a farm field in the Rostov region

Some time ago, news spread on the Internet about a huge hole in an agricultural plot in the Rostov Region. It was called differently: a farmer’s hell, a crater, a hole in the underworld, a bottom that was broken. Karst was often considered as the reason of this. However, karst is extremely rare in the Rostov Region. Most likely, the cause was a former coal mine. Scientists, who were interviewed by the editors of the “Geolnfo” journal, said that on the basis of the available amateur video, one can only make hypotheses, but for serious conclusions it is necessary to carry out special research.