The archaeological site of Al-Hijr is a major site of the Nabataean civilisation, in the south of its zone of influence. It bears witness to the development of Nabataean agricultural techniques using a large number of artificial wells in rocky ground. The ancient city of Hegra/Al-Hijr bears witness to the international caravan trade during late Antiquity. It bears outstanding witness to important cultural exchanges in architecture, decoration, language use and the caravan trade. Criterion (iii): The site of Al-Hijr bears unique testimony to the Nabataean civilisation, between the 2nd and 3rd centuries BC and the pre-Islamic period, and particularly in the 1st century AD.