Increased use of groundwater caused the ground to sink (subsidence) around Konya, Turkey, leading to this sinkhole in 2019. Sudden, large collapse of sinkholes are relatively rare. Sinkholes can ...

Every time Turkish farmer Fatih Sik drives his tractor across his cornfields, he knows the earth could open up and swallow him at any moment. Two giant sinkholes have already appeared on his land ...