. "Qattara Depression" . . . . . . . "The Great Desert" . . "The Sahara (Arabic: \u0627\u0644\u0635\u062D\u0631\u0627\u0621 \u0627\u0644\u0643\u0628\u0631\u0649\u200E, a\u1E63-\u1E63a\u1E25r\u0101\u02BE al-kubr\u0101\u202F, 'the Greatest Desert') is the largest hot desert and third largest desert after Antarctica and the Arctic. Its combined surface area of 9,400,000 square kilometres (3,600,000 sq mi)\u2014accounting for substrates such as the Libyan Desert and the Sudan region\u2014is comparable to the respective land areas of China and the United States."@en . . . . . . .