The Succulent Karoo Biome covers an interrupted belt of un­equal depth spanning the coastal regions near Lüderitz (Namibia), Namaqualand (on and west of the Escarpment), the Hantam, Tanqua and Roggeveld region as well as the Little Karoo (in a broad sense). The latter is a composite region, including karoo landscapes of the western Great Karoo Basin (surrounds of Laingsburg) and northern piedmonts of the Swartberg Mountains (surrounds of Prince Albert) and a series of valleys embraced by west-east stretching Cape Fold Mountain ranges, including those bordering the Succulent Karoo in the north (Witteberg, Klein Swartberg, Groot Swartberg, Grootrivier and Klein Winterhoek Mountains) and those forming barriers in the south (Langeberg, Outeniqua, Tsitsikamma, Baviaanskloof and Groot Winterhoek Mountains). Notable outliers of the biome are found on and around inselbergs of northern Bushmanland (embedded within the Nama-Karoo), in the deep rainshadow valley of the Olifants River  sheltered by the Graafwater and Olifants River Mountains in the west and the Cederberg Mountains in the east), in the upper Breede River Valley in the rainshadow of the Cape Fold Belt mountains and in the form of small patches east of Piketberg, embedded within West Coast renosterveld.