Mzabi men stand under an arcade in Atteuf village in the eastern city of Ghardaia, 600 km (373 miles) from Algiers, in this November 7, 2006 picture. Ghardaia is the heart of the Mezab valley which is the home of the Ibadi Muslim sect in Algeria. The Mezab valley is part of an official World Heritage Site. REUTERS/Zohra Bensemra (Algeria)