What Is the Biggest Sinkhole Ever Recorded
The biggest sinkhole ever recorded is Xiaozhai Tiankeng in Chongqing, China. It measures roughly 662 meters deep and 626 meters wide, making it one of the most massive sinkholes documented worldwide.
How Sinkholes Form
Sinkholes develop when water dissolves soluble rock beneath the surface, creating underground cavities. When the roof of these cavities collapses, a sinkhole forms. In regions with thick limestone or gypsum, this process can produce very large depressions over time.
Why Xiaozhai Tiankeng Stands Out
Xiaozhai Tiankeng is notable for its enormous size, depth, and distinctive shape. It features a large internal cave system and a bottom that supports a small forest. Scientists study it to understand karst landscapes, groundwater movement, and large-scale erosion processes.
For more details on sinkhole formation and major examples, visit Britannica – Sinkhole.
