Deep in China's Fengjie County lies a natural wonder that has fascinated experts for decades. The Xiaozhai Tiankeng sinkhole is vast. Probably formed centuries ago by collapsing caves and ...

But drones and a few brave souls who lowered themselves into places untouched since dinosaurs roamed the Earth have revealed new treasures - and turned China ... lush forest inside the sinkhole ...

China's largest desert is now encircled by thousands of trees. The forest currently stretches over about 2,000 miles around the Taklamakan desert in China's northwestern region of Xinjiang.