M’zab M’zab, Mzab or also called M’zab Valley is actually a plateau rich in limestone which has become a residential and commercial place in Algeria. It is one of the places to visit in Algeria if ever you will go there for a vacation. As of the 2005 population survery, M’zab Valley had around 360,000 residents. The M’zab Valley was recognized by UNESCO and was given the honor of being a World Heritage Site. The organization inscribed the place as M’Zab Valley back in 1982 with criteria of ii, iii and v.