"I do," rejoined Walt.
"What then?"
"Escape to the open air."
"You mean it?" Somehow, in his excitement, Jack had not gone as far as this daring suggestion. And yet it was, after all, the only thing to do. But suddenly another thought occurred to the boy.
"The professor and Coyote Pete, how can we leave them?"
"Well, we can't do them any good by remaining buried here, that's certain," replied Walt, in his sensible way.
Jack and Ralph nodded agreement.
"On the other hand, if this river really leads out into Mexico, we can take the subway to freedom and then, when we emerge, find out the best thing to do. Maybe we can fall in with some government troops or authorities of some kind."
"But suppose the insurrectos are in power wherever this river comes out?"
The question came from Ralph.