John Peep stood back and held the lantern so that they could see. He did not say a word after the chums began this second attack upon the wall.
Again the muffled shouts were heard. The chums replied—screaming at the very tops of their voices. A mass of earth fell inward.
“They are digging too! Keep it up, Chet,” called out his chum.
“I’m—getting—wind—ed!” gasped Chet.
“Let me take hold there!” cried the sturdy Dig. “You take the shovel.”
They exchanged implements, and the furious excavating went on for several minutes. They were making a round hole about breast high in the wall of the tunnel. The noise of their own pick and shovel drowned other sounds. Suddenly the pickaxe in Dig’s hands clashed with another iron implement wielded by somebody on the other side of the wall!
“Hurrah!” cried Dig Fordham. “We’ve found ’em, Chet!”
Another mass of earth fell in and the boys saw a light twinkling ahead of them.
“Is that you, Father?” called Chet Havens.
“Is that you, my boy? Well, well!” exclaimed the jolly voice of Mr. Havens, and it was filled with pride. “It didn’t take you two boys long to find us, did it?”