"
Alan sprang up in excitement.
"That's the first sign we've had," he exclaimed. "Do you suppose it
means anything?"
The edge of the cliff was so abrupt that the boys had to lie down to
look over in safety.
"It does," Ned answered. "The reason you can't see that chasm from
below or from in front is because the face of it is walled up. And
it is walled so skillfully that you can't detect it from even a
short distance."
"That's to hide something," quickly replied Alan, "but I don't see--
"
Ned was standing on top of the short filled-in portion of the chasm.
"Look!" he exclaimed, suddenly interrupting his friend. "These
stones are steps, and, they are worn!"
CHAPTER XXVII
THE TURQUOISE TEMPLE DISCOVERED
In another moment he had sprung forward and was quickly descending
into the narrow, dark pit, with Alan close behind. A cave-like
smell and a rapidly, cooling air greeted them. They were soon in
almost complete darkness. When the walls had narrowed to but a few
feet, a thin ribbon of blue sky was all that could be seen above.
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