They would bar activities there such as rappelling, zip-lining, slack-lining and high-lining, which includes balancing on a taut rope.???Pendulum??? swinging is a relatively new form of recreation in Utah???s canyon lands, which log injuries and deaths from rock climbing and BASE jumping, which involves leaping from a ledge with a parachute.Last year, 22-year-old Kyle Lee Stocking of West Jordan d