Hadschar-Gebirge
The region occupied an important location on the coast of Gulf of Oman. It lay between Khatmat Malahah in the north and Ras al-Hamra in the south, and confined between Al Hajar Mountains in the west and the Gulf of Oman in the east. Most of Oman's population were in that region, because of the green plains between the Hajar Mountains and the sea.