“All right,” agreed Chot. “Maybe it will be best to say nothing until we’re a little more sure. But it looks all right to me,” he added as again he glanced at the drawing before handing it back to Rick. “How did you come to think of it?” he asked.
“Well, I got thinking how queer it was that all those rocks should be piled up there to the left of the place where we came out of the other end of the tunnel,” answered Rick. “It didn’t seem right they should be there naturally, and when I looked at them yesterday I saw they had been blasted out.”
“Blasted out?” cried Chot in amazement.
“Yes, some explosive has been used there,” declared Rick, positively.
“Then somebody must have done it!” exclaimed his chum.
“Sure they did.”
“On purpose?”
“Why else?”
“You mean they blasted away a rocky wall and made Lost River lose itself again, Rick?”
“Something like that, yes. But I can’t tell any more about it until we go take a look. We’ll go there with this map—maybe I haven’t got it just right, ’cause I made it from memory. But we’ll go take another look, and I can fix any mistakes I made. Then, if it seems to be like what I think, we’ll tackle it ourselves.”