Valley of the Kings Baillet has located over 2,100 Greek and Latin instances of graffiti, along with a smaller number in Phoenician, Cypriot, Lycian, Coptic, and other languages. The majority of the ancient graffiti is found in KV9, which contains just under a thousand of them. The earliest positively dated graffiti dates to 278 B.C. In 1799, members of Napoleon's expedition to Egypt (especially Dominique Vivant) drew maps and plans of the known tombs, and for the first time noted the Western Valley (where Prosper Jollois and Édouard de Villiers du Terrage located the tomb of Amenhotep III, WV22). The "Description de l'Égypte" contains
Valley of the Kings that there are at least seven active flood stream beds leading down into the central area of the valley. This central area appears to have been flooded at the end of the Eighteenth Dynasty, with several tombs buried under metres of debris. The tombs KV63, KV62, and KV55 are dug into the actual wadi bedrock rather than the debris, showing that the level of the valley was five meters below its present level. After this event later dynasties leveled the floor of the valley, making the floods deposit their load further down the valley, and the buried tombs were forgotten