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
Tadjourah Region Ethiopian Emperor Haile Selassie. Among the villages in the region include Tadjourah, Kalaf, Sagalou and Hankatta. The region is the largest of the country's 'six' (one of which is sometimes termed a city instead of a region, the country's eponymous capital with the bulk of the country's population, Djibouti City). A mixture of semi-desert mountains and desert, the region is 35.5 times larger than the capital's area and has a population nine times smaller. The region is bordered by Eritrea to the north, Ethiopia to the northwest, the Obock Region to the northeast, the Dikhil and Arta regions and Lake