dense

At the other end, silent, scarcely visible, and like a shadow, was a sentinel, who was walking up and down before a grotto, which was only distinguishable because in that spot the darkness seemed more dense than elsewhere.

Both road and stream wound up through a valley dense with scrub oak and fir.

I have said that over the great Grimpen Mire there hung a dense, white fog.

As we watched it the fog-wreaths came crawling round both corners of the house and rolled slowly into one dense bank on which the upper floor and the roof floated like a strange ship upon a shadowy sea.