al-hasa algeria artesian aquifer awjila bahariya oasis barley chile china cienega coptic language desert egypt egyptian language ein gedi el camino real de tierra adentro gaberoun geography ghadames greek language highlands of iceland huacachina iceland iran israel kufra las vegas strip libya loulan millet ouargla paraje persian gulf peru sahara san pedro de atacama saudi arabia siwa oasis southwestern united states tabas timimoun tozeur trans-saharan trade tuat tunisia turfan united states wheat wikimedia commons wiktionary yarkent county zerzura