They had an ax with them, and Tom cut down the tree and trimmed it. Then, resting the log on one stone, they inserted the end under the big rock and pressed down with all their might. "She's coming!" shouted Sam, as the big stone commenced to move. "Yes, and look at the opening underneath," added Dick. "It must surely be part of the cave!" The sight of the big hole made all eager to know if it was really a portion of the shattered cave and they worked on the big rock with renewed energy. Twice it slipped back on them, but then they got a new purchase and over it went and rolled out of the way. Then all of the treasure hunters got on their hands and knees to gaze down into the hole. "It must be part of the cave," said Mr. Rover. "I'll climb down on the rope," said Tom. "Hurry up, I can't wait!" "You be careful, Tom, or you'll get hurt," warned his father. But it must be confessed he was as eager as his son to learn whether or not they had discovered the treasure cave. Tom went down, and Dick and Sam came after him. The bottom of the hole was rough. On one side was another opening, leading to what certainly looked like a cave of considerable extent. "Drop down the lantern," called Dick, and Captain Barforth did so. With the lantern lit Dick crawled into the side opening and his brothers followed. "This is certainly a cave," said Tom. "But whether it is the right one or not remains to be seen." "It must be a part of the original cave, Tom," answered Dick. "Because it is in the spot covered by the other. But it may not be the part that contained the treasure." They crawled around, over the rough rocks and fallen dirt. It was a dangerous proceeding, for they did not know but what some stones might fall at any moment and crush them. Suddenly Tom and Sam uttered the single exclamation: "Look!" Dick looked and then he, too, gave a cry. From under the edge of a rock they saw one end of a heavy wooden chest. A part of the side was split away and through the hole they saw a quantity of gold money! CHAPTER XXX HOMEWARD BOUND--CONCLUSION "The, treasure!" The boys uttered the cry together and it thrilled those at the top of the opening as nothing else could have done. "What's that?" cried Mr. Rover. "We have found one of the chests," answered Dick. "And it's full of gold pieces!" added Sam and Tom in a breath. "Then this is the treasure cave after all," said Captain Barforth. "I must say you are in luck." "I'd like to go down and have a look," put in Songbird eagerly. All wanted to look, and in the end they came down one after another by way of the rope. The rock on the chest was lifted away and the strong box was dragged forth into the light. Sure enough, it was filled with gold, just as Bahama Bill had said it would be. "Bahama Bill said there were three chests," said Mr. Rover, after the excitement of finding so much wealth had somewhat subsided. "Do you see anything of the other two?"