"That we don't know," answered Phil. "But we are hoping they are safe."
"By the way, did you see Merwell and Haskers?" cried Dave, suddenly.
"Why, no—not since they ran away from our camp," returned Roger.
"I saw them—just before I found this opening. They were below me, the two of them and Sol Blugg."
"Maybe they got caught," muttered Phil.
No more was said just then, for the boys had to do some climbing over several big rocks, and needed their breath. Then they made a turn, and a moment later came out into the sunlight.
"Oh, how good it seems to be out in the air once more!" murmured Dave.
"Thank heaven, none of us were killed," added Roger.
"No more underground exploring for me," avowed Phil. "More than once I thought we would be buried alive!"
"That is what I was afraid would happen to me," said Dave, seriously. "Yes, we can all thank heaven we are out of it."
"And now to hunt up Blower and Mr. Dillon," came from the senator's son.
"If only they are safe!" murmured Dave. For the time being those who had been on the mountainside below them were forgotten.
