World's Most Stunning Sinkholes

Xiaozhai, Tiankeng

Also known as the Heavenly Pit, this double-nested sinkhole has 662m deep vertical walls. Located in the Chongqing District, this sinkhole is arguably the ‘world’s largest sinkhole’ at 626m long, 537m wide and between 511 to 662m deep. It is a double-nested structure with an upper bowl of 320m deep, while its lower bowl is 342m deep, and both of them are on average 257 to 268m across. It’s said that the sinkhole formed over the last 128,000 years.