The Xiaozhai Tiankeng, often called the “Heavenly Pit,” stands as the planet’s largest and deepest known sinkhole. This extraordinary geological formation located in southwestern China has ...

The Xiaozhai Tiankeng sinkhole is vast. Probably formed centuries ago by collapsing caves and underground rivers, teams of explorers have sought to understand its many mysteries for years.

Length: 2053 feet (626m) Width: 1761 feet (537m) Xiaozhai Tiankeng is the largest sinkhole in the world, and no just by looking at number s it is very hard to imagine how big it is.

Xiaozhai Tiankeng, or Heavenly Pit, is the world's most massive sinkhole and is located in southwest China The deepest known underwater sinkhole is located in the South China Sea - it's 987.2 feet ...