Chebika is a mountain oasis in southern Tunisia, in Tozeur Governorate. It lies at the foot of the mountains of the Djebel el Negueb and, because of its exposure to the sun, it is known as Qasr el-Shams ("Castle of the Sun" in Arabic). In antiquity, it was once a Roman outpost, named Ad Speculum and later a mountain refuge of the Berber people.
The contemporary village of Chebika comprises several hundred people, build near the old one, abandoned in 1969 after catastrophic rain inundations.
Many scenes of the movie Star Wars Episode IV: A New Hope were shot in this area.
Information based on http://en.wikipedia.org/wiki/Chebika