Looking down this street, I could see that it terminated abruptly at the castle wall, which rose dark and unbroken sixty feet above the ground.
At the end of this street a stone footbridge spanned the moat, leading to a strip of ground perhaps one hundred yards broad and two hundred long that lay between the moat and the castle wall.

At either end of this strip the moat again turned to the castle.

The Cologne River joined the moat at the north end of this tract of ground and flowed on by the castle wall to the Somme.

In a grove of trees stood a large two-story house of time-darkened stone, built against the castle wall.

One could not leave the strip of ground save by the stone footbridge, unless by swimming the moat or scaling the walls.
When we reached the footbridge, Yolanda and Twonette, without a word of farewell, urged their horses across, and, springing from their saddles, hurriedly entered the house.