The ground fell away to the sliding black mass of the river.
Then the ground fell away with a speed that made them look in amazement.
From the village, the ground falls away to open countryside.
After a few moments the ground had more rise and fall to it.
The area around the aircraft was flat and the ground fell away on all sides.
The ground fell away as he struggled against whatever held him.
Out on the wing, the ground looked much farther away, because it was no longer for her a place to land but to fall.
Sarah ran forward, and then stopped as the ground fell away before her.
On the left hand and the right, just beyond these fringes, the ground fell away.
The ground rose and fell slightly, but as yet he had seen no hills.