You are right, they did discover the "tomb of osiris", back In 2006 I think... But the entrance to this is located further up the causeway towards the
pyramids... Close to the entrance to "Campbells tomb". This is not related to the sphinx or it's enclosure.... Unless of course, one of the internal
passages I highlight above leads into it....
PA
edit on 6-9-2011 by PerfectAnomoly because: Error