Whilst first exploring the Serapeum of Saqqara between 1851 and 1853, French Egyptologist Auguste Mariette was confronted by a huge rock, which could only be moved by the use of explosives. Once the shattered remnants of the rock were removed, an intact coffin was discovered which contained the mummy of a man, accompanied by numerous funerary treasures. A gold mask covered his face, and amulets gave his name as Prince Khaemweset, son of Ramesses II and builder of the Serapeum. These remains have now been lost but Egyptologists believe that this was not the grave of Khaemweset and that the remains were those of an Apis Bull made into a human form to resemble the Prince.