The Blyde River Canyon is a significant natural feature of South Africa, located in Mpumalanga, and forming the northern part of the Drakensberg escarpment. It is 16 miles (26 km) in length and is, on average, around 2,500 feet (762 m) deep. The Blyderivierpoort Dam, when full, is at an altitude of 665m (2182 feet). The Canyon consists mostly of red sandstone. The highest point of the canyon, Mariepskop, is 6,378 feet (1,944 m) feet above sea level, whilst its lowest point where the river leaves the canyon is slightly less than 1,840 feet (561 m) above sea level.

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