“What! You’ve been there?”
“No, but we’ve seen the cave in which it is. In fact, it is possible to see it from here.”
Mr. Holton took out his binoculars and handed them to his son.
“Look away over there,” the naturalist said, pointing to a distant wall of rock that was many hundred feet high. “That small shelf on the side of the cliff is an opening into the cave in which are the hidden riches.”
Bob scanned the landscape ahead. Then he cried out in surprise and amazement.
“A cave away up in that cliff? Seems impossible. How can you get to it?”
“Must be an entrance on the other side,” Dr. Kirshner replied. “Fekmah’s map no doubt points it out. Whether he remembered to put it on the duplicate after the original was stolen, we have yet to see. Where is he now?”
“Who, Fekmah? I left him at camp this morning.”
“Let’s go there now.”