South African wine and Chenin blanc. The cool climate Overberg region has been the site of the most recent interest and development in the South African wine industry, particularly with increased plantings of Chardonnay and Pinot noir. The entire area received very little attention until the late 20th century and was not even classified in 1973 within the original Wine of Origins programme. The maritime climate of Walker Bay and the cool, higher elevation vineyards of Elgin located east of Cape Town, have had success producing these varietals as well as Sauvignon blanc. The "Klein Karoo" region (meaning Little Karoo) has a semi-desert
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