Rock climbing is a sport, in which participants climb up or across natural rock formations or artificial rock walls. The goal is to reach the summit of a formation or the endpoint of a pre-defined route. Rock climbing competitions have objectives of completing the route in the quickest possible time or the farthest along an ever increasingly harder route. Rock climbing is similar to scrambling (another activity involving the scaling of hills and similar formations), but climbing is generally differentiated because of the use of hands to support the climber's weight as well as to provide balance.
Deep-water soloing is a form of solo rock climbing that relies solely upon the presence of water at the base of a climb to protect against injury. Participants generally seek high difficulty routes. Deep-water soloing probably originated in the late 1960s or early 1970s in Dorset, Southern England or Majorca. Real development of the style began in the mid-late 1990s, and is progressing to this day.