Dan took one of the glowing sticks from the fire to light the way, and started out.
"We'd better follow along on this level. We shall never get back the way we came."
"All right; I'm ready."
"Sam, I think we're going down instead of up," said Dan after a few minutes.
"What's the odds? We might as well bury ourselves deep while we are about it."
Both lads laughed at the red-haired boy's grim joke, neither one thinking of whining over their dangerous situation.
CHAPTER XXI
CONCLUSION
Fully half an hour had passed when Davis suddenly uttered a low "Sh-h-h!"