“Let us examine.”
For some while the two men made a close examination of the vicinity. But this resulted in nothing.
“The mystery is yet unexplained,” declared Captain Elmo.
“So it is,” agreed Frank. “Now I will advance a theory.”
“Pray, do so.”
“Of course you understand the nature of that valley down there and its sandy trail of death?”
“I understand that the bodies of many victims to the peculiar atmosphere of the valley yet lie down there.”
“Yes.”
“And that it is not safe for any person to venture into the place.”
“Quite wrong, sir!”