Djoser's burial chamber.

The south tomb at Saqqara is thought to be a symbolic burial place for the Ka of King Djoser.

The rooms in the south tomb were originally completely covered in beautiful blue faience tiles, which were meant to imitate the reed matting that ancient Egyptians used to construct their homes. These same tiles were used underneath the Step Pyramid to decorate the chambers and tunnels leading to Djoser's burial chamber.

This particular photo shows one of the false doors in the south tomb after reconstruction...