Trans Karoo Express Trans Karoo Express The Trans Karoo Express, or simply Trans Karoo, was a South African express passenger train service which travelled an approximately journey between Johannesburg and Cape Town. It operated daily in each direction, meaning that there were in fact two "Trans Karoos" - they passed each other during the night, heading in opposite directions. The service was operated by Spoornet, the national railway company. The "Trans Karoo" was named from the Great Karoo scrubland, one of the most extensive geographical features of southern Africa, across which the train operated. The route was identical to that operated by the
Karoo sediments. This exposed the dolerite sills, which were more resistant to erosion than the Karoo sediments, forming one of the most characteristic features of the Karoo landscape, namely the flat topped hills, called "Karoo Koppies". The geology of the region bears no resemblance to that of the Great Karoo (see the diagram on the left, of a NS geological cross-section through the Little and Great Karoos). The valley is an integral part of the Cape Fold Mountain Belt, with the two ranges on either side composed of extremely hard, erosion-resistant, quartzitic sandstone belonging to the 450- to 510-million-year-old Table Mountain