“Come on!” cried Jack. “Let’s see where this leads to. It may have something to do with the mystery.”
“What mystery?” asked Bess.
“What mystery? The mystery of Camp Surprise! Maybe the boys hide in this cave. Come on!”
CHAPTER XXIII—THE TREMBLING NOISE
Jack, Walter, and Paul tore away more of the bushes screening the mouth of the natural cave. As they removed the leafy branches the black hole was seen to be of large size, fully high enough to permit even a tall man to enter without stooping, and wide enough to enable three to walk abreast.
“This is some cave!” exclaimed Jack. “I wonder Mr. Floyd never told us about it.”
“Perhaps he didn’t know,” suggested Cora. “I wouldn’t have seen it, and I was within a few feet of it, if I hadn’t slipped and pulled away the bush.”
“Well, we’ll soon see if it amounts to anything,” declared Paul, setting down the pail of berries he was carrying.
“Are you girls coming in with us?” asked Walter, looking at Cora and her chums who had not advanced.
“I don’t know. Shall we?” asked Hazel, looking at her brother.