Zip lining

When I was in Costa Rica, I went zip-lining.  It's where you hang onto something and you practically fly across.  Then you can do it by yourself if you're some age older than 12, I think. It was like 100 feet off the ground or at least up to the tree tops.  Caden went by himself but he did hurt his arm.  One time I went on a super long one with Caden.  It was awesome.  Super cool.  We stopped in the middle so the guy had to call his partner.  At least we made it to the end.