had a go on a zip from the cliffs in Newquay a couple of years ago. Was great fun, and some lovely topless young ladies decided to pitch up just below where you stopped, before gliding back to the middle. The abseil to the beach was good too
When I was a nipper my parents had a zip wire between our two tallest trees, it was great and quite long after some years some nettles had grown at the foot of it and I went down it and my trousers and pants were pulled down as I hit the ground and I went through the nettles, believe me being nettled badly in the privates is excruciating