| With the exception of a small strip of crop land along the Sénégal River, all of Mauritania lies within the Sahara Desert, and much of the country receives less than 130 mm (less than 5 in) of rainfall a year. The Moors, with a mixture of Berber and Arab ancestry, are the largest ethnic group in this desert region. Depending on cattle raising for their livelihood, these nomadic people often water their animals at deep desert wells, such as this one at L‘Affolé. |