Ar-Rayn
Ar-Rayn lies south of al-Quwayiyah in the valleys of central Najd. The geographer al-Hamdani described the district under the older name al-Rayb as a great wadi with tributaries, fresh watering places and hills on either side. Among its landmarks was the dark mountain Qusas, associated with iron and with blades known by its name. Farms and small settlements are spread through the valley country.