This September 2012 photo shows The Great Sand Sea, 28,000 square miles of rolling dunes along the northern edge of the Sahara, one of the main attractions of a visit to the Egyptian oasis of Siwa, a Berber town of some 27,000 people roughly 450 miles (about 725 kilometers) southwest of Cairo. The palm tree-lined area is known for its quiet charm, ancient ruins, abundant natural springs, a vast salt lake and rolling sand dunes in the surrounding desert. (AP Photo/Kim Gamel)
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