They say that it was made by the contrabandists, but it leads to nowhere; it has been blocked since many years.

Do not fall on the stones; they are very slippery." A passage, even narrower than the first, led from the cave in which they had been standing.

Bertrand went first, his hand stretched out behind him, still holding hers.
They had scrambled in this order about a dozen yards when again they heard Cinders' cry for help--a pathetic yelping considerably farther away than it had been before.

The unlucky wanderer seemed to have lost his head in the darkness and to be running hither and thither in wild dismay.
"What shall we do ?" said Chris in tears.

"I've never heard him cry like that before." Bertrand paused to listen.