"Let a wall of rocks be imagined from three to six hundred feet in height, and rising between France and Spain, so as physically to separate the two kingdoms--let us fancy this wall curved like a crescent, with its convexity towards France. Lastly, let us suppose, that in the very middle of the wall, a breach of 300 feet wide has been beaten down by the famous 'Roland', and we may have a good idea of what the mountaineers call the 'BRECHE DE ROLAND.'"--"Raymond's Pyrenees."