Arab caravan in the Sahara desert during a sandstorm,- The Simoom.
Simoom, Arabic: سموم samūm, is the local term for a sand storm in the North African-Arab region. Originating from the Arabic word translated means poison wind. This already indicates the danger that is attached to this kind of sandstorm. The simoom is partly dust-laden and a very hot desert wind.
From “Full Peoples Gallery in images of all nations” by Friedrich Wilhelm Goedsche, Meissen, 1840.