The moat was made of pillars 25 to 30cm in thickness that were closely put up in a row, and the ditch around it is 2.5m in width and 60cm in depth.
塀は太さ約25ないし30センチメートルの柱を隙間なく立て並べて作ったもので、その周りの溝は幅約2.5メートル、深さ約60センチメートル。