Chapter XVIII
The Auto Thieves
The cave-in had imprisoned the Hardy boys.
The flashlight revealed not a single opening. The tunnel was blocked up, and for all the boys knew the barrier continued right to the outer cave.
"Now we're in for it," remarked Joe dubiously.
The boys realized that there was nothing to be gained by shouting for help. Even if their cries were heard, which would be unlikely with that solid mass of rock before them, it would only bring the auto thieves upon them.
"We'll have to work fast," said Frank, "There isn't any too much air in this place now, and if we don't get that rock cleared out of the way we'll be smothered."
"Do you mean to say we'll have to move all that rock aside?"
"What else is there to do?"
"It might take hours."
"That's better than dying in here," returned
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