As if it were made of paper, the boulder rolled back.

It made him feel as if boulders were rolling around in his head.

"You need to know no more than I," she said in a voice like boulders rolling together under the sea.

The dynamite went off behind him, but the boulder didn't roll onto the road.

With a sound like massive doors opening, the boulder pulled free of its bed and rolled.

But troubles didn't end there as the two riders got a boulder rolling toward them from behind.

Tied like a bundle, the woman was a boulder rolling downhill.

It's very hard to concentrate when you've got boulders rolling down over the top of you.

He pushed against it, and the boulder rolled away.

The boulder rolled toward him, but Odo wasn't there anymore.