MauretaniaMauretaniaofficially the Islamic Republic of Mauritania, is a country in the Maghreb region of western North Africa.Nouakchottis the capital and by far the largest city of Mauritania. It is one of the largest cities in the Sahara. The city is the administrative and economic centre of Mauritania.The Senegal River(French: Fleuve Sénégal) is a 1,086 km 675 mi) long river in West Africa that forms the border between Senegal and Mauritania.Kedietej Jillis a mountain in Tiris Zemmour, Mauritania, with the city of Zouérat on its east and Fderick at west. At 915 m (3,002 ft) tall, Kediet ej Jill is the highest peak in Mauritania.El Djoufis a desert, an arid natural region of sand dunes and rock salt which covers northeastern Mauritania and part of northwestern Mali. The El Djouf is a part of the Sahara Desert in the north.