What is "katsuogi"

or are short, decorative logs found on Japanese and Shinto architecture. They are placed at a right angle along the ridge of roofs, and are usually featured in religious or imperial architecture. Katsuogi predate Buddhist influence and is an architectural element endemic to Japan. They are often placed on the roof with chigi, a forked ornamentation used on Shinto shrines. Today, katsuogi and chigi are used exclusively on Shinto buildings and can be used to distinguish them from other religious structures, such as Buddhist temples in Japan.