A man walks over a dune overlooking Chinguetti, Mauritania. His robe or 'Boubou' flaps in the wind. Still regarded as the seventh holiest city in Islam, Chinguetti has been dated at a around seven hundred, (700) years old and is famed for it's Koranic libraries and distinctive mosque. The city however has been ravaged by the desert and the wind and is disappearing under the dunes.