Rock climbing is a sport in which participants
            climb up, down or across 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.