Is THIS, the "HALL OF RECORDS?"

we are going to go far back in time, to the days before Egypt, and discuss the location and dimensions of the hall of records, when it was set up, what lies inside and the types of buildings which once existed in Egypt tens of thousands of years ago. In fact the Sphinx is not `stand alone,' but only possibly a tiny hood-ornament on the roof of the fabled Hall of records, a much larger building underneath, which is shaped like a huge cube. So stay tuned!
In fact, sadly, the hall may have been long-ago excavated and plundered. There is an inscribed stone, uncovered in the 19th-century between the sphinx paws, which tells everything. As soon as it was uncovered, the locals, bizarrely, viewed it as sacred and began to chip away bits of it, to take away and use in rituals, otherwise long forgotten. This stone is called the dream Stela.
In fact, in looking at the picture of the stela, I am guessing that the hall of records, with sphinx on top, once looked something like one of the rock-cut buildings in Ethoipia or India, a vast structure inset into the plateau, constructed back in the days the sphinx was located in the middle of a jungle, the jungle of the nile, with vast stretches of vegetation spread out across a green Egypt, where there is now only desert as far as the eye can see.