Named for the distinctive Somali people, who comprise 95% of its population, this is the second largest of Ethiopia's regions, covering an area of 250,000 square km along the Somali border. Much of the region is desert or semi-desert, its vast area, the total population is around 5.3 million. The capital is Jijiga, east of Harar. Almost 99% of the population is Muslim, and most of are pastoralists. The important Wabe Shebelle River runs through the region.