A rift split the passage in two crosswise.
It looked as if some convulsion of nature had ripped the earth apart, and they crept back to the main cavern and tried another opening.
It was possible to stand upright in this place.
The passage wound and zigzagged.
Following it for some distance, they suddenly caught view of a lurid glare ahead as they turned an abrupt bend, and halted.
"Put out your light," whispered Old King Brady, in warning tones.
"See them?" asked the boy, complying.
"No, but they must have kindled that fire."
"Advance carefully now."
They got down on their hands and knees again, and went on to the spot where the passage opened into a smaller cave.