Help - What's the movie??

[Pelican170]

Ok, its one of those movies i remember from being a kid so it must have been sometime in the 80's when this came out i think. All i remember about the movie is that a kid is running from bad guys in the woods. He has some sort of pocket knife like a swiss army the uses for stuff and i remember a zip line that he uses to escape down a mountain towards the end. Very vague, i know. Cannot remember what movie it was!