“There’s a cave down there all right, Dick,” said Jack. “Don’t you think so?”

“Yes, it looks like a cave,” said Percival. “How would you like to go down and explore it?”

“All right, if we can manage it. Got a light? We can make torches I suppose. There is plenty of pine wood about. Anyhow, I have my pocket flash with me.”

“You fellows can go down there if you like,” laughed Arthur, “but none of it for me.”

“Or for me either,” said Harry.

“Come on, Dick,” said Jack. “Here is a good place to get down, I think.”

The two boys supplied themselves with stout sticks with which to aid them in getting down, and then began to make the descent, the other boys sitting or standing around.

Step by step, from rock to rock, and from one tree root to another the two chums made their way down into the gully and toward the hole in the face of the ledge, which they could at length see was of considerable depth, and high enough for them to pass through without stooping.

They finally reached the bottom, and then were not far from the hole into which they made their way, finding that it extended for some distance at an incline part of the way, and then on a level, as it seemed.

“There are lots of these holes in the Hudson valley,” said Jack, “and sometimes they are interesting, while at other times they are nothing but holes, don’t go very far, and have nothing in them after all.”