Joe shook his head.
"No. He seemed to go farther into the cave, toward the back."
"Well, then," said Frank decisively, "we'll just go and look for him. If he went that way, he's in the cave yet."
"Aw, let's look for him in the morning," protested Chet, as he rubbed his eyes. "I think Joe was dreaming."
"It was no dream. I heard him walking around. It wasn't any of us, so it must have been a burglar—or somebody."
"What would a burglar come around here for?"
"Perhaps it's the chap who piled up all that wood," said Frank. "Maybe this is his cave and when he came in and heard Joe call out he got frightened and ran."
"That sounds more reasonable. Anyway, we'll take a look around for him. He can't be far away."
The boys hurriedly dressed. They were soon wide awake, excitement having banished all desire for further sleep.
"We were going to explore in here, anyway," said Frank, as he took his flashlight and led the way toward the back of the cave.