Sumerian myth of Inanna's descent into and return from the Underworld. Plato notes that the citizens of Sais in Egypt worshipped a goddess known as Neith, whom he identifies with Athena. Neith was the ancient Egyptian goddess of war and hunting, who was also associated with weaving; her worship began during the Egyptian Pre-Dynastic period. In Greek mythology, Athena was reported to have visited mythological sites in North Africa, including Libya's Triton River and the Phlegraean plain. Based on these similarities, the Sinologist Martin Bernal created the "Black Athena" hypothesis, which claimed that Neith was brought to Greece from Egypt, along with "an enormous number of features of civilization and culture in the third and second millennia". The "Black Athena" hypothesis stirred up widespread controversy near the end of the twentieth century, but it has now been widely rejected by modern scholars. Cult and patronages Panhellenic and Athenian cult In her aspect of Athena Polias, Athena was venerated as the goddess of the city and the protectress of the citadel. In Athens, the Plynteria, or "Feast of the Bath", was observed every year at the end of the month of Thargelion. The festival lasted for five days. During this period, the priestesses of Athena, or plyntrídes, performed a cleansing ritual within the Erechtheion, a sanctuary devoted to Athena and Poseidon. Here Athena's statue was undressed, her clothes washed, and body purified. Athena was worshipped at festivals such as Chalceia as Athena Ergane, the patroness of various crafts, especially weaving. She was also the patron of metalworkers and was believed to aid in the forging of armor and weapons. During the late fifth century BC, the role of goddess of philosophy became a major aspect of Athena's cult. As Athena Promachos, she was believed to lead soldiers into battle. Athena represented the disciplined, strategic side of war, in contrast to her brother Ares, the patron of violence, bloodlust, and slaughter—"the raw force of war". Athena was believed to only support those fighting for a just cause and was thought to view war primarily as a means to resolve conflict. The Greeks regarded Athena with much higher esteem than Ares. Athena was especially worshipped in this role during the festivals of the Panathenaea and Pamboeotia, both of which prominently featured displays of athletic and military prowess. As the patroness of heroes and warriors, Athena was believed to favor those who used cunning