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.