Both Zak and Annie should fly to Cairo, but send Zak on from there to Zaire,
and have him visit the Shaman once again. The Shaman will explain to Zak how to
use the yellow crystal for teleportation purposes. Zak should then rejoin Annie
in Cairo.

  On one of the two legs of the Sphinx will be some more of those ubiquitous
yellow markings. Zak must recreate the drawing seen in the chamber on Mars
below the depiction of the Sphinx, which will open a secret door. Both Annie
and Zak must go inside. Yep, it's another maze, but (a) it's lighted, and (b)
there's an easy solution. Always go through the doorway with a picture of the
sun over it (or in one case, the doorway is at the end of a corridor, and the
sun is above and to the right). Eventually you will find a door with what looks
like a pair of horns above it. Inside you will find some hieroglyphics which
only Annie can read. They will instruct her to push the left button, then the
right button, and the centre button. (One of the hieroglyphics looks
suspiciously like an Imperial fighter from Star Wars, by the way.) Once the
panel opens, Zak should USE his yellow crayon on his wallpaper map, and you
should write down the last set of strange markings (whew) by the depiction of
the Great Face.