"No, nothing particularly funny. I do see the print of a horseshoe here on the rocks where some dirt has stuck to the shoe and been left on the stone. It isn't any of our stock as nearly as I can determine. I guess it must have been some of those fellows last night. They evidently were shooting from behind the tree here."

"They weren't shooting from behind much of anything, as well as I could judge," answered the fat boy.

Tad climbed up and made his way slowly along the tree trunk. As he neared his companion, he felt the tree settle a little. This at the moment did not make any particular impression on the Pony Rider Boy. Their combined weight might cause the outer end to give a little. Then all at once a howl from Chunky caused Tad to grasp a branch to save himself.

The tree top was settling slowly.

"Look, look!" cried the fat boy.

Tad turned, amazement growing on his face. The roots of the tree had slowly risen several feet into the air, disclosing a hole in the rocks.

Chunky was so excited that he fell off before Tad could say a word. The tree settled back, closing the hole in the rocks.

CHAPTER XXII

THE CAVE OF THE BANDITS

The top of the tree sprang up with such force, when relieved of the weight of the fat boy, that Tad Butler lost his hold and was catapulted to the ground, which he struck with a force that made his bones ache.