Thirty seconds to contact, and below us the ground heaved and rolled like a sick giant.

And the ground was rocking and rolling violently under him like the waves of a sea.

She used the reins to whip her horse, driving it faster as the ground rolled up and down.

The ground rolled and whatever it was kept down in the grass besides, but things were watching him and his companions.

He hit the ground hard, but not that hard- rolled and sought his bearings.

The ground rolled, unbalancing her as she grabbed frantically for a rock.

In some places, the ground rolled like ocean waves and seemed to liquefy.

The ground rolled away toward the opposite side of the valley, a good ten miles away.

Here there were some patches of brush and the ground rolled a little.

The ground began to shake and soon the thunder of a big explosion rolled over them.