LUXOR, EGYPT—Authorities from Egypt’s Luxor Museum revealed a never-before-seen plaster wall from King Tutankhamun’s tomb, The Independent reports. The wall was originally constructed just before the burial chamber was sealed to protect the young pharaoh’s grave from intruders. It still bears stamps associated with the funerary rituals and seals belonging to Tutankhamun as well as those of the necropolis guards charged with keeping the tombs saf…