“It’s queer that they should call this spot Cave Island,” observed the senator’s son. “We haven’t seen anything that looks like a cave.”
“The caves may be on the other side of the island,” answered Dave. “Look out, Roger, there is a split in the rocks! Let us jump over to yonder bushes.”
Dave placed the flashlight in his pocket and made the leap he had mentioned, and his chum came after him.
A most astonishing thing followed. The bushes where they landed gave way, and down they rolled on some smooth rocks. They tried to stay their progress, but this was impossible, and they continued to roll for several minutes. Then Dave bumped into some sort of barrier and Roger landed beside him.
“For gracious sake, what’s this?” gasped Roger, when he felt able to speak. The breath had been all but knocked out of him.
“I guess we have found one of the caves,” answered Dave, grimly. “Phew, but that was some roll, wasn’t it!”
“We must be down near the center of the earth,” murmured the senator’s son.
“Not quite as bad as that. But we came down some distance, I admit.”
“Flash that light around, Dave, and let us see where we are.”
“I will if the light hasn’t been smashed,” replied our hero. “I rolled over it half a dozen times.”