http://agathe.gr/democracy/theater.html
Theater Western drama was an Athenian invention which developed late in the 6th century B.C. out of the festivals celebrated in honor of the god Dionysos. Originally held in the Agora, the plays were soon ... The mask is characterized by the slightly twisted, trumpet-shaped mouth typical of slave masks. The hair has been combed back from the forehead, and a short beard frames the mouth. The mask is life-size but was probably not used as a mask but as a votive gift to be hung on a wall.