Again, unless there were special circumstances that necessitated such a substantial wall, which I'd sure like to know what, there would be no point to build it this way and would be unlike every other large enclosure wall built before, during, and after this period. 33ft high and 33ft wide made of stone blocks does not strike me as "wall", but rather a road.
One concern that I had with the ancient perimeter wall suggestion was that it is offset with relation to the building work - heads slightly NW.
I can't vouch for the veracity of the linked article but it gives another perspective on why the wall may be offset. Maybe an elevated causeway with missing temples at each end.