With gradients of 1:3 this pass is steep. It is not surprising that the law dictates that only 4x4 vehicles can attempt to traverse it. The pass, which is describe as the mother of all South Africa mountain passes crosses the border between South Africa and Lesotho. With the right vehicle and driving experience this is an enjoyable self-drive trip. If you don't fancy going it alone, then there are several tour operators who will take you to the top in what is a truly thrilling drive.