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About half of the country of Israel is covered by desert, principally the Negev Desert. Much of the rest of Israel is semi-arid. However, Israel also has mountainous areas, fertile green areas, a large freshwater lake, rivers and more.
The Sahel region, which borders the Sahara, is not a true desert but may become one as the Sahara advances southward. Arid lands on the edge of the Sahara in the Horn of Africa, such as the Ogaden Desert, consume portions of Eritrea, Ethiopia, Kenya, Somalia and the Sudan. Egypt's Nubian Desert and Ethiopia's Danakil Desert are also arid environments that might soon become Africa's next big desert. National Geographic: Desert Profile.