明石城築城後の元禄4(1691)年、船上城下にあった本正寺が東長寺の跡に移転したのが本松寺です。この辺りは昭和初期まで東長寺谷と呼ばれていました。ここに竜山石の列柱でできている擁壁を見つけました。
11.Tatsuyama stones stand in a row as the retaining wall
After building Akashi Castle they moved Honsho-ji temple in Funage castle town to the ruins of Tocho-ji temple and changed a part of kanji of its name. The place around here was called Tocho-ji-dani valley till about 1930. We see Tatsuyama stone posts standing in a row as the retaning wall here.
明石ヘリテージマップ『人丸』2018