A very important site, about 55 miles (88 km.) northwest of ancient Thebes, and about 270 miles (435 km.) south-southeast of modern Cairo; Nag Hammadi, where a vitally important Gnostic library was unearthed in 1945, is just upstream about 25 miles (40 km.). The location of many important temples and funerary complexes, Abydos is probably best known for the memorial temple of Seti I, which contains the Abydos King-list Table.