They were first noticed by Lepsius at Abu-Simbel, where he correctly inferred that they were the work of the Carian mercenaries of Psammetichus.
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.
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.
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.
Here are the temples of Debfld, the temple and quarries of Kertassi, the temples of Kalabsha, Bet el Wali, Dendr, Gerf Husn, Dakka, Maharaka, Es-Seba, Amgda and Derr, the grottos of Elles ya, the tombs of Aniba, the temple of Ibrim, the great rock-temples of Abu-Simbel, the temples at Jebel Adda and Wadi Halfa, the forts and temples of Semna, the temples of Amgra (Meroitic) and Soleb.
Such are found from the 6th century n.c. in the inscription of Abu Simbel, from the 5th in Herodotus, &c., and abound in Ptolemaic and later documents from the beginning of the 3rd century B.C. onwards.
The principal remaining buildings are part of a court at Memphis, the second temple at Abydos, and the six Nubian temples of Bet el-Wgli, Jerf Husein, Wadi es-Sebtia, Derr, and the grandest of allthe rock-cut temple of Abu Simbel, with its neighboring temple of Hathor.
The excavation of the rock temple of Abu Simbel and the completion of the great hail of Karnak were his greatest achievements in architecture.
It can be traced in the graffiti of the mercenaries of Psammetichus at Abu Simbel in Upper Egypt, where Greeks, Carians and Phoenicians all cut their names upon the legs of the colossal statues.