The archaeological site of Dadan consists of the ruins of the ancient capital of the powerful Lihyan (Dadan, Dedan) kingdom, which was established in the northwest of the Arabic peninsula (Hejaz area) in the 7th century BC and was finally annexed by the Nabateans in 24 BC. The ruins lie between the oasis and the rock cliffs. They consist of a ruins area which is still being excavated (ruins of the ancient city) and a number of tombs carved in the rock.