Joe uttered a sigh, and they both relapsed into silence once more.

“What are we to do?” said Joe, at last. “It is horrible, horrible to be in this black darkness. Say something, Ydoll—we can’t lie down here and die.”

“We can’t go on in the black darkness,” said Gwyn, bitterly.

“We must feel our way.”

“And suppose we come to some hole and go down?”

Joe drew his breath sharply through his teeth as he winced at the horrible idea.

“Better lie down again and go to sleep,” said Gwyn, despondently. “We can do no more.”

“Lie down till they come with lights and find us?”

“Yes,” said Gwyn, who gathered courage from these words of hope. “It’s of no use to give up. Father must have found his way out by this time. Sam Hardock knows so much about mines; he is sure not to be lost for long.”

“But if they don’t find us? I’m so faint and hungry now I don’t know what to do.”