expanse

He saw overhead a black and tempestuous sky, across which the wind was driving clouds that occasionally suffered a twinkling star to appear; before him was the vast expanse of waters, sombre and terrible, whose waves foamed and roared as if before the approach of a storm.

The avenue opened into a broad expanse of turf, and the house lay before us.

Nothing stirred over the vast expanse save a pair of ravens, which croaked loudly from a tor behind us.

Vaguely I could discern the black bank of the trees and the lighter expanse of the moor, for the moon was behind the clouds.