Exactly what Khafre wanted the Sphinx to do for him or his kingdom is a matter of debate, but Lehner has theories about that, too, based partly on his work at the Sphinx Temple. Remnants of the temple walls are visible today in front of the Sphinx. They surround a courtyard enclosed by 24 pillars. The temple plan is laid out on an east-west axis, clearly marked by a pair of small niches or sanctuaries, each about the size of a closet. The Swiss archaeologist Herbert Ricke, who studied the temple in the late 1960s, concluded the axis symbolized the movements of the sun; an east-west line points to where the sun rises and sets twice a year at the equinoxes, halfway between midsummer and midwinter. Ricke further argued that each pillar represented an hour in the sun’s daily circuit. Lehner spotted something perhaps even more remarkable. If you stand in the eastern niche during sunset at the March or September equinoxes, you see a dramatic astronomical event: the sun appears to sink into the shoulder of the Sphinx and, beyond that, into the south side of the Pyramid of Khafre on the horizon. “At the very same moment, the shadow of the Sphinx and the shadow of the pyramid, both symbols of the king, become merged silhouettes. The Sphinx itself, it seems, symbolized the pharaoh presenting offerings to the sun god in the court of the temple.” The Sphinx represents Khafre as Horus, the Egyptians’ revered royal falcon god, “who is giving offerings with his 2 paws to his father, Khufu, incarnated as the sun god, Ra, who rises and sets in that temple.” The Sphinx and the pyramids, epic feats of engineering and architecture, were built at the end of a special time of more dependable rainfall, when pharaohs could marshal labor forces on an epic scale. But then, over the centuries, the landscape dried out and harvests grew more precarious.