The East Saharan montane xeric woodlands is an ecoregion of central Africa. It covers the higher elevations of the Massif Ennedi and Massif du Kapka mountains of Chad, and the neighboring Jebel Marra mountains of eastern Sudan. These mountain ranges rise above the semi-desert Sahelian Acacia savanna at the southern edge of the Sahara Desert. The ecoregion covers an area of 27,900 square kilometers (10,800 square miles). Ecoregions are defined by World Wildlife Fund as relatively large units of land or water containing a distinct assemblage of natural communities and species, with boundaries that approximate the original extent of natural communities prior to major land-use change. Terrestrial ecoregions are land ecoregions, as distinct from freshwater ecoregions... // Etymology World map showing Africa (geographically) The name Africa came into Western use through the Romans, who used the name Africa terra â land of the Afri (plural, or Afer singular) â for the northern part of the continent, as the province of Africa with its capital Carthage, corresponding to modern-day... The Sahara is the worlds second largest desert (second to Antarctica), over 9,000,000 km² (3,500,000 mi²), located in northern Africa and is 2. ...