"Good idea," agreed Tom.
The scientist was soon taking measurements of the thickness of the cave roof, noting its formation, and looking at the frozen floor.
"I see no reason why this cave should collapse," he finally announced. "The only danger is the movement of the whole valley of ice, and that is too gradual to cause any immediate harm. Yes, I think the airship could be housed in the ice cave."
"Then I'll run her in, and she'll be safer," decided Tom. "I guess we three can do it, Ned, and leave Mr. Damon and Abe to keep on digging for gold." The airship was so buoyant that it could easily be moved about on the bicycle wheels on which it rested, and soon, after the lower edge of the opening into the ice cave had been smoothed down, the RED CLOUD was placed in the novel shelter.
"Now to continue the search for the yellow nuggets!" cried Ned, and Tom went with him, even Mr. Parker condescending to take a pick, now. Abe was the only one who dug steadily in one place. The others tried spot after spot.
"You've got t' stick t' one lead until you find somethin', or until it peters out," explained the miner. "You must git down to th' dirt before you'll find any gold, though you may strike a few grains that have worked up into th' ice."
After this advice they all kept to one hole until they had worked down through the ice to the dirt surface below. But even then, Abe, who was the first to achieve this, found no gold, and the old miner went to another location.
All the rest of that day they dug, but with no result. Not even a few grains of yellow dust rewarded their efforts.
"Are you sure this is the right place?" asked Mr. Damon, somewhat fretfully, of Abe, as they ate supper that night in the airship, sheltered as it was in the ice cave.
"I'm positive of it," was the reply. "There's gold here, but it will take some prospectin' t' find it. Maybe th' deposits have been shifted by th' ice movement, as Mr. Parker says. But it's here, an' we'll git it. We'll try ag'in t'-morrow."