Chapter 20 WHAT BILLY'S CAMERA REVEALED

As it was now getting well along in the afternoon, and as the way back was a difficult one, Percival and Jack decided that they would better return without making any further explorations.

"We have found out a lot that we did not know, anyhow," said Percival, "and we can come here again."

"Certainly I never knew about that cave," remarked Art