In the thick wall was a little archway, beneath which commenced a stair.

Setting Rachel on the ground, she ran up it, lightly as a cat.

At the top of thirty steps, many of them broken, she found an old and massive door.
With a sigh of disappointment, the Libyan turned to descend again; then, by an afterthought, pushed at the door.

To her surprise it stirred.
Again she pushed, and it swung open.

Within was a large chamber, lighted by loopholes pierced in the thickness of the wall, for the use of archers.