You see an old book which has been here for centuries... It reads: "Herein are seteth Queen Hatshepsut of the City of Kotlxax. We dost not know the final outcome of the great quakes that hath beset us... ...we do set our queen here, that one day when things art again calm, she shalt be found by a mighty savior, who canst restore her to her throne, that we, the robots, may again live in peace with the people." The book ends with several numeric signatures, dated nearly a thousand years earlier. A P.S. has also been attached. P.S. Our great queen, most advanced of the robots, art a true android. She dost require only the mindstone to again operate. He who solveth the final riddle shouldst be worthy to restore her: "To where the three great mountains go; These be the ones that stand in a row; To their base thou surely go; Shovel in hand; Thy dirt to throw." END