“On the northern side of his Saqqara Step Pyramid Djoser emerges from his tomb in statue form, into a statue-box, or Serdab, which has just such a pair of peepholes to allow him to see out …with eyes once inlaid with rock crystal, Djoser’s statue gazes out through peepholes in the serdab box, tilted upwards 13° to the northern sky where the king joined the circumpolar stars…”

Mark Lehner, The Complete Pyramid, p. 90