The North Arabian Desert oases were inhabited by sedentary populations in the 4^th and 3^rd millennia BCE. A fortification enclosing the Khaybar Oasis—one of the longest known going back to this period—was just revealed by a team of scientists from the CNRS¹ and the Royal Commission for AlUla (RCU). This new walled oasis is, along with that of Tayma, one of the two largest in Saudi Arabia.

While a number of walled oases dating back to the Bronze Age had already been documented, this major discovery sheds new light on human occupation in north-western Arabia, and provides a better grasp of local social complexity during the pre-Islamic period.

Cross-referencing field surveys and remote sensing data with architectural studies, the team estimated the original dimensions of the fortifications at 14.5 kilometres in length, between 1.70 and 2.40 metres in thickness, and approximately 5 metres in height. Preserved today over a little less than half of its original length (41%, 5.9 km and 74 bastions), this colossal edifice enclosed a rural and sedentary territory of nearly 1,100 hectares. The fortification’s date of construction is estimated between 2250 and 1950 BCE, on the basis of radiocarbon dating of samples collected during excavations.

While the study confirms that the Khaybar Oasis clearly belonged to a network of walled oases in north-western Arabia, the discovery of this rampart also raises questions regarding why it was built as well as the nature of the populations that built it, in particular their relations with populations outside the oasis.

Sign up for the Daily Dose Newsletter and get every morning’s best science news from around the web delivered straight to your inbox? It’s easy like Sunday morning.

This archaeological discovery, whose results will be published on 10 January in the Journal of Archaeological Science: Reports (JASREP), paves the way for major advances in understanding the prehistoric, pre-Islamic, and Islamic past of the north-western Arabian Peninsula.

IMAGE CREDIT: Khaybar Longue Durée Archaeological Project, M. Bussy & G. Charloux

If you enjoy the content we create and would like to support us, please consider becoming a patron on Patreon! By joining our community, you’ll gain access to exclusive perks such as early access to our latest content, behind-the-scenes updates, and the ability to submit questions and suggest topics for us to cover. Your support will enable us to continue creating high-quality content and reach a wider audience.

Join us on Patreon today and let’s work together to create more amazing content! https://www.patreon.com/ScientificInquirer