A cluster of Abbasid archaeological sites are found near the north - west coast .
A cluster of Abbasid archaeological sites are include Ar Rakiyat , Umm Al Kilab , Ghaf Makin , Mussaykah , Murwab , and Al - Haddiyah .
A cluster of Abbasid archaeological sites are found near the north - west coast and include Ar Rakiyat , Umm Al Kilab , Ghaf Makin , Mussaykah , Murwab , and Al - Haddiyah .