Ouadane has some of the most impressive ruins of Mauritania. It is all set in the hillside, with buildings that blend with the rocks, both from colour and now their crumbling status. Well, with 800 years since the construction, one should rather be impressed with how much is still there. Ouadane was once an important centre for camel caravans, when salt, dates and gold were the main merchandise. Of the ruins, the old mosque and the Ksaru l-Klali stand out.
There is still a village here, situated above the old one, and inhabited by the Idawalhajj tribe, of Berber origin. The positioning of the whole village is strikingly beautiful, with an oasis, palmeraie, and sand dunes.