"Look!" cried our hero, a little later.
He pointed to a series of small stones resting on the floor of the cavern. They were somewhat in the form of a circle, with a large stone in the center.
"Oh, I remember those stones!" cried Roger, joyfully.
"So do I!" put in Abe Blower. "I reckon as how we are in the right passageway now, lads!" he continued, in a more hopeful tone.
"I am sure we are!" came from our hero. "But we have a pretty good distance to go yet."
"Yes, an' be careful thet ye don't go down in none o' them pesky holes," cautioned the old miner.
Quarter of an hour later they reached the spot where they had shot the lioness. Looking ahead, they saw a torch waving in the air.
"Hullo! hullo!" came in the voice of Phil. "Where are you?"
"Here we are!" answered Dave and Roger.
"You've been a long time in here," went on the shipowner's son.