The first great stone temple to appear on the Acropolis was probably inaugurated before the establishment of the Great Panathenaia festival in 566 BCE. This building is more popularly known as the Hekatompedon (“100 feet long”) or the “Bluebeard” temple as a result of an astonishing group of sculptures in the corner of a pediment (triangular gables). This “bluebeard” is a human-headed, triple-bodied monster with spreading wings and a lower body that terminates in three entwined coils that resemble a snake. The faces have wide eyes, a broad grin, and trimmed pointed beards painted in a bright blackish-blue. This monster may be Typhon, the last son of Gaia (Earth) and father of all monsters; he was killed by Zeus.