“Not for me,” put in Billy.
“You don’t suppose, do you,” demanded Frank, “that the people who took all the trouble to build this outlet from the mines or temples or whatever is at the end of our trip, would have left this chasm impassable? What would have been the sense of it?”
“That’s so,” rejoined Harry, “but how are we going to find it—if there is some way of getting over?”
“Look for it,” rejoined Frank quietly and, suiting the action to the word, he approached the other side of the passage. After a brief search he uttered a cry of triumph.
“I’ve got it, boys,” he exclaimed, “come here.”
To his wondering young companions he exhibited the lower links of a heavy chain of some sort of metal which was not iron and to which even Frank could not give a name.
“We’re as good as across,” he exclaimed.
“Well, how does that solve the problem?” demanded Billy.
“How, my bright young reporter,” cried Frank, “did you ever, when you were at school, swing over a ditch on a rope?”
“Lots of times,” replied Billy wonderingly; “but——”