They were first noticed by Lepsius at Abu-Simbel, where he correctly inferred that they were the work of the Carian mercenaries of Psammetichus.
at Abu-Simbel, in Nubia, give conclusive proof that the art of writing was widely disseminated among the Greeks at least three centuries:before the age of Alexander.
He also pushed his investigations into the great temple of Edfu, visited Elephantine and Philae, cleared the great temple at Abu Simbel of sand (1817), made excavations at Karnak, and opened up the sepulchre of Seti I.
A great temple at Tanis boasted a larger colossus than existed in Thebes: Heliopolis and Memphis must have been lavishly adorned, and the temples of Abu Simbel alone would have been sufficient to satisfy the ambition of many of the great Pharaohs.
The ruined temples of Abu Simbel are on the west side of the Nile, 56 m.