There was to be no rain, after all; the clouds rolled off to the horizon again, making the great purple rampart and long purple isles of that wondrous land which reveals itself to us when the sun goes down,—the land that the evening star watches over.
There are no more uses of "rampart" in the book.
Show samples from other sources
they stormed the ramparts of the city
The invaders were unable to penetrate the outer ramparts.