The stones in this part of the wall weight about 60 tons. Nobody knows how they built them, moved them or fitted them. Consider they were built 3,000 years ago with a technology we do not know about. The stones are so tightly fit together you can not get a piece of paper very far into them. It very impressive to think about that, we don't know how they did it, only that they did. I guess we could build such things today, maybe.