From the dark horizon, it looked as though a bad storm could be on the way.

For a long moment he just stares at the dark horizon.

He sat patiently, watching the dark horizon for another three minutes.

The dark horizon has turned gray by the time they arrive.

But the other two continued their course, vanishing over the dark horizon.

Somewhere, over the distant dark horizon, lay their new lives.

She tried to pick out the shrike against the dark horizon, but could see nothing.

Over in the west some heat lightning was skipping about the dark horizon.

On the dark horizon there was a tiny cluster of yellow lights.

There was the outline of a tremendous shadow against the dark horizon.