Still trying, he collapsed, and the big stone rolled over him.

At any moment the huge stone could roll over and crush them.

He grabbed at the big rock in front of him, and a small stone rolled to the ground.

The stone he had picked up when the threat of violence was in the air rolled into the street.

Together the two boys leaned their weight on it and the great stone rolled away.

When his left hand opened, two more pretty little stones rolled alongside the others.

And had the stone rolled, it would lie now somewhere directly before me.

Before he could reach the top, however, the massive stone would always roll back down, forcing him to begin again.

They find the stone rolled away and the tomb empty.

Once or twice the heavy stone rolled back on them, but they were determined creatures.