CHAPTER XX

THE TREASURE OF BUFFALO LAKE

The cavernous opening into which the boys swung their lanterns in a vain attempt to penetrate its gloom seemed indeed to lead into the heart of Buffalo Mound. A muddy, turbulent stream was rushing down it at a tremendous rate, but there was room enough left to allow the passage of an agile boy, willing to bend himself double, and the water was not deep enough to be an obstacle.

"It may show us a way out," exclaimed Glen. "I'm bound to see where it goes. Who'll go with me?"

"We'll all go, Brick. You don't leave me behind in this dark cave, you don't," declared Chick-chick.

"How about your head, Matt?" asked Apple.

"It's good enough now," said Matt. "I'm sure going to be along on this."

With Glen in the lead they crept one after another along the narrow passage, Apple bringing up the rear and trailing behind him the cumbersome pick. At a place where the passage widened out into a roomy vault which gave space for them to stand erect Glen halted the little company and pointed onward to show how the tunnel, leaving this vault, suddenly seemed to narrow so that there was scarcely room for a head above water.

"It's going to be pretty risky here, fellows. I think we'd better go one at a time. I'll crawl as far as I can. If I don't come back while you count a hundred let Chick-chick crawl after me. If I'm stuck or choked he can pull on my feet and pull me back. Then Matt can do the same for him and Apple for him. I'll either get through or be back by the time you count a hundred."