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
Osoyoos Desert Society Osoyoos Desert Society The Osoyoos Desert Society is a non-profit organization that was founded in 1991 to conserve and restore the biodiversitive area of the British Columbian Southern interior. This area had not been the focus of prievious conservation efforts, even though it contains a large concentration of at-risk species and is one of the four most endangered ecosystems in Canada. One of the area's main features is Okanagan Desert, a semi-arid region in the southern part of the Okanagon region of British Columbia, notable for having some plant species not found anywhere else in Canada. Another feature is the