A bus descends the serpentine turns of Tongtian Avenue on Tianmen Mountain near Zhangjiajie, Hunan Province, China (@ Tom Horton/Getty Images)
- This mountain highway includes a total of 99 hairpin turns.""Cutting corners is really not an option
- What else is there to do around here if you survive this nail-biting road trip?""There\s a nice relaxing walk - suspended over a mountain
- Traversing such a precarious route in a bus is scary enough - is anyone out there brave enough to do it solo?""Make way for Rollerman!
- A rocky natural arch cuts right through this mountain, creating a shape like a giant door.""Are you ready to enter the ‘Heavenly Gate Mountain\?