olduvai gorge, kalahari desert, semidesert, namib desert, elgon, lake tanganyika, giraffa camelopardalis, thar desert, zambezi river, damaraland, lake kivu, genus australopithecus, gondwanaland, nyiragongo, massifs, nubian desert, stratovolcano, ruwenzori, volcanic crater, escarpments, sudd, craton, eskers, miocene epoch, eastern ghats, bushveld, zambezi, nullarbor plain, equatorial, coralline, sahara desert, savanna, conodonts, paleogene, aksum, turkana, syrtis major, graben, cushitic, australopithecus afarensis, rift valley, asthenosphere, caldera, meroe, deltaic, empty quarter, olduvai, peccary, apennine, kilimanjaro, great dividing range, atlas mountains, australopithecus africanus, baobab, tarantula nebula, arabian desert, highlands, australopithecus, subalpine, arid, spotted hyena, mount kilimanjaro, sauropod dinosaur, bushbuck, volcanoes, atbara, kagera, san andreas fault, okavango, savannah, gaboon viper, bangweulu, wadi halfa, cragged, biogeographical, jungfrau, iguanodon, hyraxes, nilotic, homo erectus, archaean, australopithecines, metamorphic rock, tien shan, palaeo, cenozoic, zagros mountains, chagga, hummocky, lowveld, lechwe, okapi, himalayas, ichthyosaur, synclinal, jebel, mt etna, tsavorite, ornithopod, tsangpo, laurasia, wadi