The last major building phase was the sixth, which saw the restoration of the eastern and western external walls after they were severely damaged by Mongol besiegers.[53] A northeastern salient bastion, much smaller than the eastern and western bastions, was also built.[53] Masonry from the fifth phase was reused for the reconstruction along with new gypsum, limestone and other materials.[53] The seventh and eighth phases both consisted of heightening al-Rahba's western external walls.[53]