Succulent Karoo 115 reptile species, 48 are endemic and 15 are strict endemics. The Sperrgebiet region is a hotspot for an unusual tortoise, the Nama padloper. Endemism is present, but less pronounced, among the Succulent Karoo’s bird and mammal populations. The ecoregion has been designated a biodiversity hotspot by Conservation International. Succulent Karoo The Succulent Karoo is a desert ecoregion of South Africa and Namibia. The Succulent Karoo stretches along the coastal strip of southwestern Namibia and South Africa's Northern Cape Province, where the cold Benguela Current offshore creates frequent fogs. The ecoregion extends inland into the uplands of South Africa's Western
Tirari Desert and the Sturt Stony Desert runs aligned with the Birdsville track to the north east. The desert experiences harsh conditions with high temperatures and very low rainfall (mean annual rainfall is below ). The main vehicular access to the desert is via the unpaved Birdsville Track which runs northwards from Marree to Birdsville. The Mungerannie Hotel is the only location between the two towns that provides services. The Tirari Desert region has a number of large cattle stations which are stopping points on the Channel Country aviation mail run. Dulkaninna Station has been run by the same family for 110