The worst-case scenario is that the stones start falling down.

Laurana felt the stones start to shift from under her.

A stone at the top of a hill may start rolling, but it shows no pertinacity in trying to get to the bottom.

Richard pressed his hand to the icy cold plate and stone started grating as it moved.

And then suddenly the stones started staying where I put them.

Immediately, stones started flying at him from a group of angry Palestinians who were watching.

It's possible to pick out the blazes in the fading light, but the stones under our feet are starting to hurt.

The stone hit the driver's door, bounced once and then started to roll toward the forward wheel well, making ample noise along the way.

Then the three stones start to glow a haunting incandescent white.

The stone starts to produce a beam of light which rejuvenates both of them.