"There was apparently little choice of direction. Our torches burned steadily, and so we knew there was no breeze coming from either direction that might point to an outlet. Our sense of locality was rather twisted by this time, but after a consultation we set out through the tunnel in what we believed to be the direction of our camp. Before we had gone far, Bob complained of wanting to sleep, and it was all we could do to keep him moving. I walked on one side of him, holding his arm, while Wryburn, another of the party, supported him on the other side. Brad walked in front, carefully scanning the walls of the tunnel for signs of an opening.
"After we had gone a considerable distance in this manner, we heard a faint roaring sound, that grew constantly louder as we pushed forward.
"It sounds like water," said Wryburn. "We must be coming to a subterranean river."
"We had little doubt that this theory was correct, and pressed forward with renewed hope. At any rate, we had the assurance that the tunnel would not end in a blank wall, as we had feared, and so force us to retrace our footsteps.
"We were held back badly by Bob, though, who, by now, had become almost helpless. We were forced practically to carry him, and he seemed to have lost consciousness.
"All things have an end, however, and at last we stood on the bank of the underground river. It was two or three hundred feet wide, and raced along with a very powerful current. By this time you may be sure we were very thirsty, as well as hungry, and the cold water satisfied one craving if not the other. After we had drunk our fill we set to work dressing Bob's wounded hand as well as we could, which is not saying much. He seemed to be in a sort of coma, from which we were unable to arouse him."
"After we had made him as comfortable as possible we discussed plans of escape. I was of the opinion that our best course would be to follow the river in the hope of its emerging into the open at some point. There seemed to be no objection to this from my companions, so after a short rest we started out. First, we improvised a rude stretcher for Bob, and took turns carrying it."
"At the spot where we had first come upon it, the river was edged with a little strip of coarse gravel, but, as we progressed, this became narrower and narrower, and the river seemed to be running with even greater velocity than before. At last the strip of beach disappeared altogether, and we had no choice but to enter the water. We splashed along wearily, and hope burned lower and lower in our breasts. To add to our troubles, our stock of torches was almost exhausted, and we were forced to burn only one at a time, to make them last longer.
"The walls between which the stream now ran got closer and closer together, with the result that the water became deeper and rushed along with greater force. The sound of its roaring in the confined place was deafening, and communication with each other was out of the question.
"We had traveled perhaps three miles in this manner, when we suddenly noticed that the water seemed to be rising! Within a few minutes after we had observed this, it crept up to above our knees, and its roaring grew perceptibly louder. We looked desperately about us for some place of refuge, but there was none. The stream now ran in a cavern not more than eighty feet wide and ten feet high, and its smooth, water-worn walls stretched on into the darkness ahead without a break.