He glided away, after lighting two lanterns, by the gleams of which the adventurers could see that they were in a vaulted cavern that had evidently been fitted up as a living apartment. The sides, roof and floor were of stone. It was clean, and the air was fresh. There were some chairs, a table, and several cots, with pieces of bagging for bedding, though it was warm in the place.
"I guess we can stay here until we discover the secret," spoke Tom.
"Bless my watch! We can if we have something to eat," came from Mr. Damon, with something like a sigh. "I'm hungry!"
"And I want to make some observations," said Mr. Parker. "From what I have seen of this mountain, I would not be surprised if this cave was to be suddenly destroyed by a landslide or a lightning bolt. I will make some further investigations."
"Well, if it's going to cause you to make such gloomy prophecies as that, I'd just as soon you wouldn't look any further," spoke Tom, in a low voice. But Mr. Parker, taking one of the lanterns, set about examining the rock of which the cave consisted.
In a short time Bill Renshaw returned with enough food to last for two days. He said
