The N12 is a National Route in South Africa, which starts in George in the Western Cape and ends in Witbank in Mpumalanga.
It is maintained by the South African National Roads Agency. The road runs roughly from south to north, however, once it passes Kimberley in the Northern Cape, it gradually turns eastward. Only the section between Soweto and Witbank is a limited access dual motorway. The section between Klerksdorp and Potchefstroom is a dual carriage highway.
The Meiringspoort section in the Swartberg between De Rust and Klaarstroom follows the gorge cut by the Groot River is a scenic drive crossing twelve old drifts (replaced by bridges today). From De Rust one will cross the drifts in the following order: Spook drift, Boesman drift, Nooiensboom drift, Dubble Drif se Draai, Ou tol drift, Wa drift, Witfontein se drift, Ontploffings drift, Perskeboom drift, Wasgat drift, Eerste/Laaste drift.
Meiringspoort is a deep cleft through the seemingly impenetrable Swartberg Mountain range. This natural passage forms a convenient link between the Great and Little Karoo. Soaring cliff walls with spectacular rock formations line the 25 km tarred road, which winds along the floor of the gorge, crossing the Groot River 25 times. Entry to the Poort is via Klaarstroom, 55 kms east of Prince Albert, en route to Oudtshoorn and the coast. Hardy plants, including indigenous pelargoniums, cling to the precarious rock faces while birds, baboons and smaller fauna abound in the protected kloofs & crevices. 
Among the most scenic spots is the waterfall tumbling into a dark pool that, according to legend, is bottomless. In Meiringspoort one feels insignificant against the overwhelming grandeur of the surroundings. Driving through this Poort with its winding road, the traveller is enchanted by the scenery with a kaleidoscope of every changing colour. The richness of the vegetation along the river will intrigue plant lovers and birdwatchers will be amazed at the bird life. Meiringspoort was originally opened to traffic on the 3rd March 1858.
