Rock Climbing.... ROCKS!
Especially Sport Climbing!
Rock Climbing is a sport in which participants climb up, across, or down natural rock formations or artificial rock walls. The goal is to reach the summit of a formation or the endpoint of a usually pre-defined route without falling. Rock climbing is a physically and mentally demanding sport, one that often tests a climber's strength, endurance, agility and balance along with mental control. Knowledge of proper climbing techniques and the use of specialized climbing equipment is crucial for the safe completion of routes.
Learn more on Wikipedia