The little Goryo Shrine in Kamakura puts on a small but unique festival where the participants wear masks which are over two centuries old. The festival is held in honor of the enshrined spirit of Kamakura Kagemasa, a famed samurai warrior of the 11th Century popularly known as Gongoro. You will love this video on YouTube. Many different kinds of masks are paraded. I think the one here is an old mask called Menkake Gyoretsu. Enjoy.