Being cut horizontally, it lies half-buried in drifted sand, with nothing to show that it is not wholly disengaged and ready for transport. Our books tell us, however, that the under-cutting has never been done and that it is yet one with the granite bottom on which it seems to lie. Both ends are hidden; but one can pace some sixty feet of its yet visible surface. That surface bears the tool-marks of the workmen. A slanting groove pitted with wedge-holes indicates where it was intended to taper toward the top. Another shows where it was to be reduced at the sides. Had it been finished, this would have been the largest obelisk in the world. The great obelisk of Queen Hatshepsu at Karnak, which, as its inscriptions record, came also from Assûan, stands ninety-two feet high and measures eight feet square at the base;[51] but this which lies sleeping in the desert would have stood ninety-five feet in the shaft, and have measured over eleven feet square at the base. We can never know now why it was left here, nor guess with what royal name it should have been inscribed. Had the king said in his heart that he would set up a mightier obelisk than was ever yet seen by eyes of men, and did he die before the block could be extracted from the quarry? Or were the quarrymen driven from the desert, and the Pharaoh from his throne, by the hungry hordes of Ethiopia, or Syria, or the islands beyond the sea? The great stone may be older than Rameses the Great, or as modern as the last of the Romans; but to give it a date, or to divine its history, is impossible. Egyptology, which has solved the enigma of the sphinx, is powerless here. The obelisk of the quarry holds its secret safe, and holds it forever.