Masks have a long history dating back to at least 7000 BC when they were used for ritual purposes. Early masks were likely made of perishable materials like leather that have not survived. In Western Africa beginning in ancient times, large wooden masks were expertly crafted and used in ceremonies, especially following the death of an important tribal figure. These masks were often animal representations and were believed to allow communication with animal spirits. Common animal masks included antelopes, and facial features symbolized traits like wisdom or aggression. Masks played an important cultural role in ancient Greece as well, originally being used to honor Dionysus and in comedies and satyr plays, with elaborate masks developing as theater competitions emerged around 486 BC.