The walls and floor, the very air, were trembling again as the helicopters made another run on the mansion.

The walls no longer trembled, nor did distant bells toll.

Hard to tell, given the haze, but it seemed to him even the walls trembled.

It echoed through his head and the walls trembled.

Six explosions make the ground shake and the walls tremble.

And it came to pass that the earth shook again, and the walls trembled.

Then the car door slammed, and the walls trembled.

The wall itself trembled and Damiano snatched back his hand.

The vault was black with smoke, the walls still trembled.

The wall trembled again, and several boulders tumbled into the cave.