Karoo Supergroup of the country, and in the Lebombo mountains along the Mozambique border. Once the layer of hard lava was eroded away, the softer Karoo sediments over the rest of the basin eroded even faster. However, the dolerite sills resisted erosion, protecting the softer Beaufort and Ecca shales beneath them. This created numerous and widespread flat topped hills, known as Karoo Koppies ("koppie" being the Afrikaans term for hill), which are iconic of the Karoo, and, by extension, the South African landscape. The dykes, or vertical fissures which brought the lava to the surface stand out today as linear ridges extending
Okanagan Desert Okanagan Desert The Okanagan Desert is the common name for a semi-arid area located in the South Okanagan region of British Columbia, Canada, primarily around Osoyoos Lake. Part of the area is called the Nk'mip Desert by the Osoyoos Indian Band, though the entire region, like other similar parts of the British Columbia Interior, is technically only semi-arid shrub-steppe. While some areas in British Columbia are more arid, the South Okanagan shrub-steppe contains several species of plants that are not found elsewhere in Canada. It is the presence of these specific plants in the Antelope-brush ecosystem that is claimed to