Kamoinariyama Kofun

...The stones of the stone house and the mortuary beds on either side were decorated with concentric circles and continuous triangles in three colors: red, blue, and white, but the colors are no longer clear today.
[Kamoinariyama Tomb]
This keyhole-shaped tumulus from the first half of the 6th century is located in Kamo, Takashima-cho, Takashima-gun, Shiga Prefecture. It is located on the alluvial plain on the west shore of Lake Biwa, and the south-facing tumulus is about 50m long and has traces of a former moat.

*Some of the terminology used in reference to Kamoinariyama Kofun is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…石屋形および左右の屍床の石材には，赤･青･白の3色で描いた同心円と連続三角形文の装飾があったが，現在では彩色は鮮明でない。
【鴨稲荷山古墳】
　滋賀県高島郡高島町鴨にある6世紀前半の前方後円墳。琵琶湖西岸の沖積平野に位置し，南面する墳丘の全長は約50m，もと周濠をめぐらした跡がある。…

※「鴨稲荷山古墳」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報