The earliest tomb paintings in Ancient Egypt, at Nekhen, c. 3500 BC, classified as Naqada, possibly Gerzeh, culture include images of lions, including an image of a human (or deity) flanked by two lions in an upright posture. Among ancient Egyptians, from prehistoric times through well documented records, the war goddess Sekhmet, a lioness, later depicted as woman with a lioness head, was one of their major deities. She was a sun deity as well as a fierce warrior and protector. Usually she was assigned significant roles in the natural environment. The Egyptians held that this sacred lioness was responsible for the annual flooding of the Nile, the most significant contributing factor to the success of the culture. Sometimes with regional differences in names, a lioness deity was the patron and protector of the people, the king, and the land. As the country united, a blending of those deities was assigned to Sekhmet.