This report presents the main results of the exploration survey undertaken in the northern part of al-Jawf Province between September 25th and October 5th 2021. Its objective was on the one hand to start the architectural survey, description and study of the main ancient buildings previously identified in the Upper Wâdî as-Sirhân, also referred as the Qurayyât al-Milh (“Salt villages”) area. On the other hand, it aimed to contribute to the assessment of the amount, quality and perhaps touristic values of archaeological resources and heritage in this area. In fall 2021, on the field, the team was composed by Dr Pauline Piraud-Fournet, Pierre-Marie Blanc & Thibaud Fournet (CNRS), Khalifah al-Rowaili, Saud al-Tamemi & Jaza al-Harbi (MoC); the survey was funded by the Saudi Ministry of Culture, French Embassy, European Commission HOLYHOST Research Programme and University Paris 1 Panthéon-Sorbonne, ArScAn UMR 7041-CNRS. The report first reminds the historical importance of the region of the Upper Wâdî as-Sirhân and the previous surveys and studies carried out. In a second part, it provides a description and first analysis of the sites recorded during the mission.