Xiaozhai Tiankeng, also known as the “Well of Heaven,” is a remarkable natural wonder located in Fengjie, China.

It holds the distinction of being the world’s largest and deepest sinkhole, measuring an astonishing 662 meters in depth, 626 meters in length, and 537 meters in width. This colossal sinkhole is a testament to the immense power of nature, formed through the erosive forces of water and time, and is a true marvel of the natural world.

The Xiaozhai Tiankeng is not just a geological phenomenon; it is also home to a diverse ecosystem. The sinkhole’s unique microclimate has fostered a wide variety of plant and animal life, making it a biological treasure trove. One of its most awe-inspiring features is the 8.5-kilometer underground river that flows through its depths, culminating in a spectacular waterfall. This subterranean river and waterfall create a mystical, serene environment within the sinkhole, drawing visitors and researchers alike to experience its majesty.

During the rainy season, the beauty of Xiaozhai Tiankeng is further enhanced as additional waterfalls cascade dramatically from the sinkhole’s rim, creating an almost surreal, otherworldly landscape. The combination of towering cliffs, lush vegetation, and the thunderous sound of falling water creates a breathtaking spectacle that has earned the sinkhole its place among Earth’s most extraordinary natural wonders. Its sheer scale and beauty make it a destination for adventurers and nature enthusiasts, while its ecological significance continues to captivate scientists around the world.