Nugget obediently climbed into his canoe, and Ned did the same. For a long while they sat thus, side by side, without speaking. Ned's courage was almost at the breaking point. In spite of his sanguine words he felt that the chance were terribly adverse. Without a ray of light to guide them it would be a difficult matter to find the main channel of the stream again, and follow it to the outlet which must certainly exist. There was danger of falling into deep holes, of striking sharp rocks, or blundering into other side passages with which the cavern was doubtless honeycombed.