He sighed, looking through the bars at the vast cavern.

But suddenly they emerged on a natural balcony, high in the side of a vast deep cavern.

The fire burning brightly did little to warm the vast cavern.

They looked out into a cavern so vast that it seemed to have no end.

Eventually the tunnel swung to the left and before long opened into a vast cavern.

He stood in the vast cavern while the others disappeared into the Bridge.

They found themselves in a vast cavern, into which their wounded were brought and attended to by the women.

And the floor of the vast cavern surely was a desert.

It was a vast cavern full of shattered rock and dark pools.

They stood in a vast cavern into which the first tunnel had led them.