the succulent karoo biome runs along the west coast, from approximately lamberts bay northwards to over 200 km into southern namibia. it starts in the south just north of the sandveld geographical region, about 250 km north of cape town, and continues through namaqualand, the richtersveld, immediately south of the orange river, and on into the namaqualand or namaland region of southern namibia. none of these regions is ever referred to, either geographically or locally, as "karoo". however, it has a major extension inland into the tankwa karoo and moordenaarskaroo regions of the lower karoo, and adjoining upper karoo region of the geographic great karoo. it also occurs to the south, in part of the breede river valley, as the robertson karoo. from here, it continues eastwards into the western half of the little karoo.