At the same time he found abundant proof that human beings had recently visited that place, and would doubtless soon do so again. This was in the shape of boxes, bales, and casks piled against the walls on both sides of the passage. For a moment Peveril was greatly puzzled by these; then, as he recalled Joe Pintaud's conversation regarding smugglers, he concluded that he had stumbled across a depot of goods belonging to those free-traders of the great lake.
"In which case," he said to himself, "I shall surely be out of here within a few minutes; for an entrance for smugglers must mean an exit for prisoners."
This was a sound theory, but, like a great many other theories, one that proved faulty upon practical application, as our young friend discovered a few minutes later.
Directly beyond the packages of goods he came upon a small derrick, set firmly into the solid rock at both top and bottom. It had a substantial block-and-fall attachment, and was swung inward. At this point also a heavy tarpaulin, reaching from floor to ceiling, was hung completely across the cavern.
Cautiously raising one corner of this, Peveril was blinded by such a flood of light that for a moment he was completely dazzled. As his vision was gradually restored he found himself on the brink of a precipice and gazing out over a boundless expanse of water--in fact, over the great lake itself. A narrow ledge projected a little beyond the curtain that he had lifted, and as he hesitatingly stepped out upon it he also instinctively grasped a small cedar that grew from it to steady himself while he looked down.
The descent was sheer for twenty feet, and so smooth as not to afford a single foothold along its entire face. From the rippling water at its base rose a jagged ledge of black rocks, which Peveril recognized the moment his eyes fell upon them.
"Of all mysteries this is the most inexplicable!" he cried; "and yet it surely is the very place."
As he spoke he turned to look at the curtain which he had let fall behind him, and very nearly tumbled from the ledge in amazement at what he saw. Instead of the sheet of dingy canvas that he expected, he was confronted by a sheer wall of cliff, stained the same rusty red as that extending for miles on either side, and apparently not differing from it in any particular. He was compelled to reach out his hand and touch it before he could dispel the illusion and convince himself that only a sheet of painted canvas separated him from the cavern he had just left.