The Klein Karoo forms a long inland basin between major mountain systems across the Western Cape. Broad semi-arid valleys extend between the Langeberg and Swartberg ranges, while the Outeniqua Mountains define much of the southern boundary, creating a landscape of enclosed plains, rocky foothills and prominent mountain corridors.
Across the interior, dry farmland, ostrich country and small settlements occupy flatter valley floors, while resistant mountain ridges rise sharply around them. Swartberg Pass, Tradouw Pass and Huisrivier Pass expose the geological structure of these ranges, while areas around Calitzdorp and Ladismith introduce rugged red-rock landscapes and isolated mountain forms.
The visual structure of the region is defined by the contrast between expansive valley floors and enclosing mountain walls. Long roads, layered ridgelines and sparse vegetation reinforce the scale of the interior, while low-angle sunlight, storm clouds and seasonal changes in vegetation continually alter the colour and atmosphere of the landscape.