IMPORTANT NOTICE: The old farm over which this road traverses has been sold to a new owner, who has subsequently locked the gates at either end, so this pass is unfortunately no longer publicly accessible.
This gem of a pass is a well hidden secret, which lies in an isolated valley to the north of the Klipbokkrans and Baviaansberg mountains [1946m] and follows the natural kloof formed to the south of the Grasberg mountain [1638m]. It lies on the east/west axis and at 16,1 km is quite a long pass. It's not only long in terms of distance, but in time too. You will need at least 1,5 hours to complete the kloof itself and that excludes the southern return leg over many kilometres of farm roads.
Multiple farm gates and to a fairly dodgy road, which can be in various states of disrepair, all add to the remote and rugged allure. It's best done in a 4x4 or at least a "bakkie" with good ground clearance and diff-lock. Despite the average gradient being an easy 1:30, there are some very steep parts, especially near the summit, which reach 1:6. During winter and after rain, there are multiple river crossings to negotiate, none of which are crossed over any bridges. The rewards however, are magnificent.
Grootrivierhoogte forms part of the exceptionally beautiful route through the Southern Cederberg, connecting farms like Kromrivier, Matjiesrivier, Nuwerus and Mount Ceder, with the plateau of the Koue Bokkeveld. The road is made up of two major passes - the other being the Blinkberg Pass. Both offer stunning mountain scenery in crisp mountain air. The passes are seriously steep in some places - as steep as 1:5 !!!
Grootrivierhoogte is one of the steepest along this route and light front wheel cars will struggle on the final section near the summit in wet conditions, but for the vast majority of the year, this pass is doable in any vehicle. Take time to stop at the summit and allow the mesmerising mountain views to captivate your soul. From the summit one can look to the south and see part of the Blinkberg Pass, whilst the northern view includes Nuwerus, and Cederberg Oasis.
This particular Ouberg Pass (there are another three - one in the Northern Cape near Sutherland and the other near Gifberg (W/Cape) with the fthird being in the Eastern Cape near Graaff-Reinet) is a well-designed gravel pass linking the town of Montagu with the Karoo highlands and remote towns like Sutherland, Matjiesfontein and Touwsrivier as well as providing an access route to the fabulous Anysberg Nature Reserve.
It is a perennial favourite with offroad clubs and touring bikers, but due to its good design and reasonable gradients, is suitable for all vehicles. It contains 38 bends, corners and curves within its 7,8 km length, with an altitude variance of 497m, producing an average gradient of under 1:16.
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