“Here,” he said, “Mr Lovel, is a truly remarkable spot.” 

“It commands a fine view,” said his companion, looking around him.

“True, but it is not for the prospect I brought you hither; so you see nothing else remarkable? – nothing on the surface of the ground?”

“Why, yes; I do see something like a ditch, indistinctly marked.”

“Indistinctly! – pardon me, sir, but the indistinctness must be in your powers of vision – nothing can be more plainly traced – a proper agger or vallum, with its corresponding ditch or fossa. Indistinctly! why Heaven help you . . .”

From Sir Walter Scott, The Antiquary, quoted in Stuart Piggott, Ruins in a Landscape (1976).