Very cautiously, I moved onward, stopping, every few steps, to listen.  I had gone, perhaps, a hundred yards, when, suddenly, it seemed to me that I caught a faint sound, somewhere along the passage behind.  With my heart thudding heavily, I listened.  The noise grew plainer, and appeared to be approaching, rapidly.  I could hear it distinctly, now.  It was the soft padding of running feet.  In the first moments of fright, I stood, irresolute; not knowing whether to go forward or backward.  Then, with a sudden realization of the best thing to do, I backed up to the rocky wall on my right, and, holding the candle above my head, waited—­gun in hand—­cursing my foolhardy curiosity, for bringing me into such a strait.

I had not long to wait, but a few seconds, before two eyes reflected back from the gloom, the rays of my candle.  I raised my gun, using my right hand only, and aimed quickly.  Even as I did so, something leapt out of the darkness, with a blustering bark of joy that woke the echoes, like thunder.  It was Pepper.  How he had contrived to scramble down the cleft, I could not conceive.  As I brushed my hand, nervously, over his coat, I noticed that he was dripping; and concluded that he must have tried to follow me, and fallen into the water; from which he would not find it very difficult to climb.

Having waited a minute, or so, to steady myself, I proceeded along the way, Pepper following, quietly.  I was curiously glad to have the old fellow with me.  He was company, and, somehow, with him at my heels, I was less afraid.  Also, I knew how quickly his keen ears would detect the presence of any unwelcome creature, should there be such, amid the darkness that wrapped us.

For some minutes we went slowly along; the path still leading straight toward the house.  Soon, I concluded, we should be standing right beneath it, did the path but carry far enough.  I led the way, cautiously, for another fifty yards, or so.  Then, I stopped, and held the light high; and reason enough I had to be thankful that I did so; for there, not three paces forward, the path vanished, and, in place, showed a hollow blackness, that sent sudden fear through me.

Very cautiously, I crept forward, and peered down; but could see nothing.  Then, I crossed to the left of the passage, to see whether there might be any continuation of the path.  Here, right against the wall, I found that a narrow track, some three feet wide, led onward.  Carefully, I stepped on to it; but had not gone far, before I regretted venturing thereon.  For, after a few paces, the already narrow way, resolved itself into a mere ledge, with, on the one side the solid, unyielding rock, towering up, in a great wall, to the unseen roof, and, on the other, that yawning chasm.  I could not help reflecting how helpless I was, should I be attacked there, with no room to turn, and where even the recoil of my weapon might be sufficient to drive me headlong into the depths below.