Ancient forest growing inside a deep sinkhole in Guangxi, China, with sunlight illuminating tall trees and lush vegetation.
Deep beneath the earth's surface, in Guangxi, China, explorers recently uncovered a breathtaking natural wonder: a massive sinkhole sheltering an untouched ancient forest.
This geological marvel, known as a tiankeng or “heavenly
pit,” plunges more than 300 meters into the ground, forming a world within a
world.