Here is a sport that really looks difficult, but also like lots of fun. You can try it at just a foot off of the ground, but it’s more exciting to watch someone do it much higher. Now the other question you might have is how do you attach the highline to its two ends?

Slacklining is a balance sport that uses nylon webbing tensioned between two anchor points. Slacklining is distinct from tightrope walking in that the line is not held rigidly taut (although it is still under some tension); it is instead dynamic, stretching and bouncing like a long and narrow trampoline. The line’s tension can be adjusted to suit the user and different types of dynamic webbing can be used to achieve a variety of feats. The line itself is flat, due to the nature of webbing, thus keeping the slacker’s footing from rolling as would be the case with an ordinary rope. The dynamic nature of the line allows for impressive tricks and stunts.

Highlining is slacklining at large distances above the ground or water. This second video gives some insight into how the crew sets up a slackline and does the filming. This took place at the longest highline in Europe (103 meters = 338 feet) and the height is 50 meters = 164 feet.

You can see more of these videos and others showing rock climbing at this site .