The enlightenment came sooner than we anticipated, and was accompanied for me by a great shock. Under the influence of my new friend's inspiriting society, I was feeling a light-heartedness to which I had long been a stranger; and upon observing before me a small round hollow in the field we were crossing, I was seized with a momentary impulse to run forward, as I might have done when a boy, and let the impetus of descending the near side carry me up the sloping grassy bank which I saw upon the farther one. Had I followed out that impulse, however, I should not now have been writing this story; for when close upon it, but not before, I perceived to my horror that the innocently seeming indentation of the ground was in reality an awful natural pit. Where the grassy slope terminated, instead of the green level I had expected to see, yawned a black chasm; and looking downwards, I positively trembled as my eye sank into an abyss some hundred feet in depth, at the bottom of which, as though it had been a gigantic caldron, appeared a seething mass of water, rolling and dashing itself against the rocky sides, and sending up a booming sound like the explosion of cannon. An exclamation of horror burst from my lips as this unexpected phenomenon met my sight, and drawing Mr Morgan backwards, I nervously entreated him not to stand so near the edge. That 'Devil's Hole' had filled me with the strangest sensation of creeping dread; and when presently we came upon a second hollow in the meadow, I shrank from approaching it. The little minister, however, would not be deterred from doing so; and from the manner in which I saw him walking round and round, curiously peering over its side, I was prepared for the announcement which he made upon rejoining me, that that too was a 'Devil's Hole'--larger but in other respects similar to the one I had seen. An involuntary shiver was almost the only comment I made upon this communication; and as we continued our course, I looked apprehensively in all directions for further suspicious undulations of the ground. But none presented themselves; for like the Spike Rocks, these holes are but two in number; and when we had taken a survey of the Rocks--to my mind the lesser curiosities of the district--we returned to our dog-cart.