On the west side of the outer castle, there was the Tojin-machi-kuchi Moat (Yana Moat) which was about 17–35 metres (56–115 ft.) wide. Along the eastern side of this moat, there was the Matsu-dote (Pine Mound), while along the Ohori Moat continuing from the south end of the Matsu-dote there was the Sugi-dote (Cedar Mound). On the Matsu-dote defensive line there was a single storey gate, the Kuro Gate, which, unlike the other gates of the outer castle, was not a "masugata" gate. There was a weir at the north end of the moat, and fish were kept in water taken in from the sea.