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Tianmen Shan (Heaven's Gate Mountain) is a cave natural arch eroded through a karst syncline. It is located about 8 km south of the city of Zhangjiajie (formerly Dayong) in northern Hunan Province, China. It is accessed from Zhangjiajie by what may be the world's longest skytram (7.5 km) that leads to a bus ride on a very winding road, followed by a set of stairs with 999 steps. People have said that riding the skytram feels like riding a roller coaster. I'm not too sure how I feel about that though.
17. Cliff walking - Hu Shan Mountain, China
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The exhilarating mountain hike is not for the faint of heart (duh!). You are given two straps to hook onto wires on the path. The plank path includes steel rod ladders, footholds carved out of the cliff and narrow wooden plank walks. All of this is located thousands of feet above the ground. What the hell is this woman doing? No freakin' way.
18. Marathon de Sable, Morocco
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A sheer endurance test, this one. Known as the toughest race on Earth, the race is a grueling multi-stage adventure through a formidable landscape in one of the world’s most inhospitable climates - the Sahara desert. The rules require you to be self-sufficient, to carry with you on your back, everything except water that you need to survive. You are given a place in a tent to sleep at night, but any other equipment and food must be carried.
19. Volcano Boarding - Cerro Negro, Nicaragua
![Image](https://700010.xyz/files/funzug/adventure/adrenaline_junkies_spots_19.jpg)
While racing down an active volcano at 30 mph on a little piece of wood sounds really fun, volcano boarding can also be a bit dangerous. Volcanic rocks are not as slippery as snowflakes, there's a lot more friction to deal with. Crashing into sharp volcanic rocks at that speed will leave a mark (or ten).