There are words etched onto the wall here, they read:  The powerful ankh is required for entrance into the great pyramid, but even so the pyramid is not totally open to these adventurers.  There are two guards that must be passed in order to retrieve the Eye of Horus.  As long as the adventurers stay to the passages on the right and do not attempt to take anything other than the Eye, the guards are the only two obstacles that they will have to face.