The granite quarries which supplied the ancient Egyptians with most of the hard stone used in pyramids and temples. The quarries still hold the Unfinished Obelisk, possibly intended as a companion to the Lateran Obelisk, originally at Karnak but now in Rome. It would have weighed over 1,100 tons and would have been the world's largest piece of stone ever handled. The Temple of Philae on the island of Agilka. The temple was dedicated to Isis, sister/wife of Osiris and patroness of the Ptolemaic rule.