Its called...

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[link] http://www.livestrong.com/article/467638-how-to-do-parkour-in-a-mostly-rural-environment/

Verb Fowl!

Quote: Step 2.

Climb a tree.

Parkour represents a way to traverse obstacles in an efficient manner.  "Good you got that one right."  Do we need advice on how to use a creek or a tree!  I feel your in a pretty BAD situation if you look at a tree and wonder "What do I do on this?".