Prints left by voters' fingers marked with indelible ink stain the doorway of a polling station guarded by a soldier in the ancient desert town of Chenguetti, some 500 km (300 miles) northeast of the capital Nouakchott, March 11, 2007. Mauritanians began voting on Sunday to choose a president and restore civilian rule to the Saharan Islamic state after 19 months under a military junta. REUTERS/Finbarr O'Reilly (MAURITANIA)