Uqair is an ancient fort of Islamic origin, located in the Eastern province of Saudi Arabia. It is alternatively spelled Al-'Uqair, Uqayr, and Ogair, all Latin transliterations of the same Arabic word. It has been linked by some to the ancient city of Gerrha mentioned in Greek and Roman sources. The site was also the location of the 1922 conference at which the Protocol of Uqair was issued, helping establish the borders of modern Saudi Arabia.
The fort sits about 50 miles northeast of the fertile oasis of Al-Hasa on the east coast of the Persian Gulf. At this ancient locale are the remains of a large fort that now marks the site of the same name. The current structure that exists is of unknown origin. It is not absolutely clear who built the fort that measures roughly 150 ft. (50 m.) on each side which consists of a stone rampart topped with mud brick. (The Persian Gulf in Antiquity, Vol. II, D.T. Potts, P. 56).
Read more about Uqair: Location, Dilmun, Historical Mentions of Gerrha, Geoffrey Bibby and Uqair, Portuguese Influence, Conference of Uqair, Conclusion, Further Reading