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The Sahara: The World’s Wild Places/Time-Life Books
By: Jeremy Swift, Pierre Boulat
Book Condition: Good
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RM21.90
1 in stock
Description
The Sahara blankets almost the entire northern third of Africa. The area covered in this book (brown rectangle above) is mostly rock and gravel (dark brown shading right). In the centre, with extensions to the south and east, rises the desert's mountain spine (light brown shading). Surrounding the mountains are vast gravel plains or reg - the detritus of ancient rivers that, in the Sahara's less arid past, flowed from the mountains. In the north, the reg are broken up by flat-topped plateaux, or hamadas, whose surfaces are strewn with coarse stones. The remainder is sand (shaded yellow), swept across the reg by the wind into sand seas or ergs which, contrary to the popular view, form only a quarter of the desert. Five main tracks take direct north-south routes across the Sahara. Broken blue lines trace dried up river beds that flood after the occasional rains.