International audienceThe recently postulated granit " arch " of Thutmosis III before the VIth pylon at Karnak may have never existed. An architectural detail reveals that the central sandstone gate with its caveto cornice either preexited, either was contemporary to the granit massonnery which surrounds it. So there was never any free standing granit " arch ", but a much more classical one-tower pylon with its gate. Few extra observations give complementary informations on the monument