The movie involves a couple of teens headed up a mountain to go camping or something like that. Then while headed up the mountain they have to cross a gap so the oldest boy climbs over and attaches a harness with some lines anchored to the rocks. Then one by one that have to pendulum swing over the gap. I think that one of the last kids to go is scared so they start yelling at him and then he goes and maybe the rope breaks. They make it to the top of the mountain where they set up camp by a lake. I can remember old style green canvas tents and the teens trying to fish in the lake/pond. I don't have anything else but those vague memories. Also, I don't think that there were any adults around. What I remember most was the sound that the harness made when they threw it back to the kids on the other side of the gap. Please help me figure this one out.

White Water Summer (1987)

Wow my description was pretty far off and you still got it. Thank you.