The deepest sinkhole in the world. Located in Fengjie, China. 30° 45′ 1.8″ N, 109° 28′ 12.36″ E. It’s 1.3 mile down and up on stairs. It is not a long walk but very tiring. To me, it is much harder than 10 miles hike in high mountains. If you go visit Three Gorges Dam, make sure… Continue reading Xiaozhai Tiankeng Fengjie China
