Although not a registered SA Natural Heritage Site, the world renown Blyde River Canyon deserves to be included here. The reserve is located north of Graskop and covers an area of 22 664 ha, extending from the Pinnacle Rock in the south to beyond the Blyderivierspoort Dam in the north.
The Blyde River Canyon is the third largest canyon in the world and was formed by rivers cutting deep into the escarpment and eroding millions of tons of rock which were carried to the Lowveld and beyond to the Indian Ocean. The reserve (administrated by the Mpumalanga Parks Board) is known primarily for it's outstanding natural beauty, as well as for the numerous endemic and endangered fauna and flora species that occur on the reserve.
Five of the 71 different veld types of South Africa occur on the reserve. These include Mixed Bushveld, North Eastern Mountain Sourveld, Lowveld Sour Bushveld and Lowveld Mixed Bushveld. The reserve represents a transitional zone for the flora of these five veld types, including their associated fauna, which migrate along the escarpment from as far south as the Southern Cape; plants from KwaZulu-Natal; sub-tropical plants from the Lowveld and plants from the central bushveld, which follow the Ohrigstad and Olifants River valleys into the canyon. The rich and varied plant life is influenced by the specific climate, altitude and soil conditions.
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