The highest point of these ruins , a conical hill rising about 30 m above the level of the surrounding plain , northeast of the canal bed , is called by the Arabs Bint el-Amiror ( ` prince 's daughter ' ) . The highest point of these ruins , a conical hill rising about 30 m above the level of the surrounding plain , northeast of the canal bed , is called by the Arabs Bint el-Amiror `` prince 's daughter . ''