Is zip lining an extreme sport?

Related questions

1. What's the biggest zipline in the world?
2. How fast can a zip line go?
3. How long is the longest zipline in the world?
4. What is the highest zipline in America?
5. Where is the longest zipline in the USA?
6. How does zip lining work?
7. What's the highest zipline in the world?
8. How does a zip line work?
9. What it's like to ride the world's fastest zip line?
10. How long is the longest zipline in the US?

Tags

1. #steel
2. #allows
3. #which
4. #typically
5. #incline
6. #cable
7. #extreme
8. #travel
9. #suspended
10. #stainless
11. #lining
12. #pulley
13. #colorado
14. #sport
15. #dozen
16. #gravity
17. #assistance
18. #locations