Internal passageways
I was astounded to see the internal passage ways. It took me back to Sicily and a fortress that was built there in about the same time period. It was designed where warriors could move from spot to spot within the structure without creating risk. An inferior force could appear to be stronger as they moved to multiple defensive positions within the structure. I have included a photo of the Sicilian passageways that were built thousands of miles apart at about the same time.