This valley was the Jewish area. There are old stone structures which may have been a synagogue, church, or residence. Above the valley is the 'Zarvia Dji' plateau where Jews congregated.
An early mention of this synagogue appears in the writings of the traveler Benjamin II who, in 1848, describes how Jewish woman would ritually immerse in the nearby river despite the risk of molestation. Benjamin II describes two incidents in which Jewish women resisted attack. In one case, a Jewish woman killed one of four attackers by hurling a piece of wood, only to herself then be killed. Another woman, taken by surprise, either grabbed the dagger of her attacker, or produced one she had concealed, and stabbed him before she was similarly stabbed. http://archive.diarna.org/site/detail/public/1293/