Hieroglyph In Temple of Abydos
For me, this is really a controversial piece of hieroglyph in the temple of Abydos. Some people (who claim that Egyptians had some contact with aliens) believe that this hieroglyph is real and in original form.
Some other says that the carving was altered by the successors of Ramses II (may be Merneptah). It was a common practice among Pharaohs of Egypt to destroy the symbols and glory of their forefathers, in order to showcase themselves. Example is Hatshepsut’s temple at Deir el Bahri, where statues and wall paintings were destroyed by her own son.