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Rh against the rocks, lay just as they had fallen until Bob and Betty had uncovered the leaves which had so long covered them.

"How are we going to get it out of here?" asked Betty, when they had satisfied themselves there was nothing left undiscovered.

"That's the pressing question," confessed Bob. "Incidentally, we have to get ourselves out, too. I think we'd better walk on a bit, and look for some trail out. One lucky thing, no one will take the treasure while we're scouting."

"Where do you suppose that goes to?" said Betty, when they had been tramping about five minutes.

She pointed to a rocky formation that led off into the side of the chasm. It was evidently the mouth of a cave.

"I don't know, of course," admitted Bob. "But I think we had beter take a chance and follow it. It will be dark, but so will the chasm in another half hour. I'll go first and you come after me."

It was inky black in the cave, and there was no assurance that it would lead them anywhere and every prospect that they would have to retrace their steps. He was careful to hint nothing of this to Betty, however, and she, on her part, determinedly stifled any complaint of weariness that rose to her lips.