eep silence fell over the tiny group. The dark mass of the rocky ceiling scraped their helmets; below, the bluish waters tapered into a thick gloom, hiding, miles beneath, the mound-buildings and swarming octopi.
One of the men spoke. His words were audible to everyone, and they voiced the thought in every brain:
"What're we going to do now?"
Keith had no answer. They had escaped the immediate danger, but it was only a temporary respite. The commander knew it was hopeless to try and locate the tunnel leading to the outer sea, for they were very tired, and in their clumsy suits they would be able to swim only a few rods. Their helmet-lights were gone; they had played their last card.
"They're goin' to find us after a while," the pessimistic voice continued. "They'll send that submarine of theirs after us—or maybe they'll come up in their metal suits...."
"Well," Keith replied with forced cheerfulness, "then we'll have to fight 'em off."
"Why not rip our suits an' end it now—" began another, but Graham's voice cut in sharply.
"Quiet!" he said. "I heard something!"
The men stilled abruptly. In tense silence their ears strained at the headphones. Wells asked: "What did you hear?"
"Wait!" Graham interrupted, listening intently. "There it is again! Listen! Can't you hear it? Why, it sounded like—like—"