Slacklining first emerged in the UK about three years ago, but its origins are in the USA, and can be traced back to a group of thrill-seeking rock climbers who in the late seventies first had the idea of stringing up nylon webbing and walking across it. There is now global interest in the activity and various slacklining world records exist, including 306 metres for the longest walk across, and an amazing 1000m for the highest.