At one end, only a few yards from her, a stream rushed and gurgled among great boulders, and its insistent murmur filled the air.

Behind her rose a great wall of grey rock, clothed here and there with some dark growth.

Its rugged face was dented with hollows that looked like the homes of wild animals.

There was a constant trickle of water on all sides, an eerie whispering, remote but incessant.

As she sat there in growing panic, a great bat-like creature, immense and shadowy, swooped soundlessly by her.
She shrank back with another cry, and found Nick Ratcliffe's arm thrust protectingly about her.
"It's all right," he said, in a matter-of-fact tone.