Flying over this 500-foot-deep fissure was the last item on my Grand Canyon to-do list A visitor flies the zip line at Hualapai Point at Grand Canyon West in Arizona.

Picture zip lines, rock-climbing walls, an alpine slide and a floating playground that resembles a spinoff of “American Gladiators.” ...

Feeling a little adventurous? Gliding down the longest zip line in the country from atop the Great Smoky Mountains just might be the thrill you need.