Dosariyah, Archaeological site in Jubail, Saudi Arabia

Dosariyah is an archaeological site near Jubail located about 800 meters (half a mile) from the Persian Gulf coast, rising as a low flat hill above the surrounding ground. Excavations have revealed multiple layers of occupation, showing how the settlement developed and changed over several centuries.

The settlement was founded during the Neolithic period and remained occupied across several centuries, with the earliest evidence dating back roughly 7000 years. The site reflects how early communities adapted to coastal living along the Persian Gulf.

About a quarter of the pottery at Dosariyah is tempered with straw and minerals, a local ware distinct from the imported Ubaid-style vessels. The site also yielded nine obsidian blade fragments traced to Pasinler and Erzurum in eastern Anatolia and to Armenia. Layers up to 50 cm thick of pearl oyster shells suggest pearling.

Dosariyah lies about 12 km south of Jubail and 800 m inland from the present Gulf coast, reached off the road toward Sabkha as-Summ; the low hill rises only about 2 m above the flat ground. A massive fence built after the first excavations surrounds the site, and since 2010 a Saudi-German team from the Dammam Regional Museum and the University of Tübingen has been re-excavating, so access depends on the season's work. The ground is dunes with sparse vegetation and no direct view of the sea.

Nine obsidian blade fragments found at Dosariyah were traced by chemical analysis to sources in eastern and northeastern Anatolia, including Pasinler near Erzurum, and to Armenia. The finished blades had travelled roughly 1,500 km from where the volcanic glass was quarried, showing how far the site's trading contacts reached in the Ubaid period.