There also are the remains of Koshiguruwa (the compound bounded by earthworks) on the upper and lower parts of the mountain slope across the street from the south of the Kuruwa, and it is thought to be a part of Awajimaru.
また南外側では、道路を挟んで上下斜面に腰曲輪跡が残っているが、この淡路丸に付随したものと考えられている。