"Well," admitted Jack, "seems to me that we'll have to take the chances. We certainly don't mean to throw up the sponge, when we're so near the end of the race."

"I should say not!" breathed Teddy, who had considerable pugnacity in his makeup, although not really what you would call a fighter, like Jimmy.

"What's the use hanging around here, when that black opening invites us to come on in?" Jimmy wanted to know.

"We'd better carry out our scheme, and trust to luck to see us through," Frank gave as his opinion.

Ned saw that all of his chums were apparently of one mind. Really, he himself had not the least idea of backing down; his only thought had been to consider what they were likely to run across, so as to be prepared, like true scouts.

"You are all right," he observed, "and while we don't want to run up against any new trouble, we mustn't let that stand in our way. Francois, you and the chief lead off. And remember, everybody, to get down low enough, so that you can't see a single tent. That's the only way to make sure that some one in their camp won't see us."

Jimmy nodded his head, as if pleased that they did not mean to back down; though he should have known Ned better than to suspect the other of timidity.

The two guides started for the opening, with the rest trailing after them, so that the column looked very much like a long snake in motion.

Of course, every fellow felt his nerves on edge with apprehension. It was impossible to foretell what might happen. For all they knew, the three men may have suspected that they had been followed, and were now laying a clever trap, in order to take the explorers off their guard.

As they drew closer to the yawning mouth of the mine among the rocks, Jimmy fancied that he saw a slight movement there. He could not make sure, nor did he find it possible to prove his suspicion, and on this account dared not try to attract the attention of Ned.