Chapter 13

THE PUNCH-BOWLS AND CAVERNS OF KENTUCKY.--”INTO THE UNKNOWN COUNTRY.”

“This part of Kentucky borders a field of caverns that reaches from near the State of Tennessee to the Ohio River, and from the mouth of the Cumberland, eastward to and beyond the center of the State. This great area is of irregular outline, and as yet has been little explored. Underneath the surface are layers of limestone and sandstone rock, the deposits ranging from ten to one hundred and fifty feet in thickness, and often great masses of conglomerate appear. This conglomerate sometimes caps the ridges, and varies in thickness from a few feet only, to sixty, or even a hundred, feet. It is of a diversified character, sometimes largely composed of pebbles cemented together by iron ore into compact beds, while again it passes abruptly into gritty sandstone, or a fine-grained compact rock destitute of pebbles. Sometimes the conglomerate rests directly on the limestone, but in the section about us, more often argillaceous shales or veins of coal intervene, and occasionally inferior and superior layers of conglomerate are separated by a bed of coal. In addition, lead-bearing veins now and then crop up, the crystals of galena being disseminated through masses of fluor-spar, calc-spar, limestone and clay, which fill fissures between tilted walls of limestone and hard quartzose sandstone. Valleys, hills, and mountains, grow out of this remarkable crust. Rivers and creeks flow through and under it in crevices, either directly upon the bedstone or over deposits of clay which underlie it. In some places, beds of coal or slate alternate with layers of the lime rock; in others, the interspace is clay and sand. Sometimes the depth of the several limestone and conglomerate deposits is great, and they are often honeycombed by innumerable transverse and diagonal spaces. Water drips have here and there washed out the more friable earth and stone, forming grottoes which are as yet unknown to men, but which will be discovered to be wonderful and fantastic beyond anything of a like nature now familiar. In other places cavities exist between shelves of rock that lie one above the other--monstrous openings caused by the erosive action of rivers now lost, but that have flowed during unnumbered ages past; great parallel valleys and gigantic chambers, one over the other, remaining to tell the story of these former torrents. Occasionally the weight of a portion of the disintegrating rock above becomes too great for its tensile strength and the material crumbles and falls, producing caverns sometimes reaching so near to the earth’s surface, as to cause sinks in its crust. These sinks, when first formed, as a rule, present clear rock fractures, and immediately after their formation there is usually a water-way beneath. In the course of time soil collects on their sides, they become cone-shaped hollows from the down-slidings of earth, and then vegetation appears on the living soil; trees grow within them, and in many places the sloping sides of great earth bowls of this nature are, after untold years, covered with the virgin forest; magnificent timber trees growing on soil that has been stratified over and upon decayed monarchs of the forest whose remains, imbedded in the earth, speak of the ages that have passed since the convulsions that made the depressions which, notwithstanding the accumulated debris, are still a hundred feet or more in depth. If the drain or exit at the vortex of one of these sinks becomes clogged, which often occurs, the entire cavity fills with water, and a pond results. Again, a slight orifice reaching far beneath the earth’s surface may permit the soil to be gradually washed into a subterranean creek, and thus are formed great bowls, like funnels sunk in the earth--Kentucky punch-bowls.

“Take the country about us, especially towards the Mammoth Cave, and for miles beyond, the landscape in certain localities is pitted with this description of sinks, some recent, others very old. Many are small, but deep; others are large and shallow. Ponds often of great depth, curiously enough overflowing and giving rise to a creek, are to be found on a ridge, telling of underground supply springs, not outlets, beneath. Chains of such sinks, like a row of huge funnels, often appear; the soil between them is slowly washed through their exit into the river, flowing in the depths below, and as the earth that separates them is carried away by the subterranean streams, the bowls coalesce and a ravine, closed at both ends, results. Along the bottom of such a ravine, a creek may flow, rushing from its natural tunnel at one end of the line, and disappearing in a gulf at the other. The stream begins in mystery, and ends in unfathomed darkness. Near Marion, Hurricane Creek thus disappears, and, so far as men know, is lost to sight forever. Near Cridersville, in this neighborhood, a valley such as I have described, takes in the surface floods of a large tract of country. The waters that run down its sides, during a storm form a torrent, and fence-rails, timbers, and other objects are gulped into the chasm where the creek plunges into the earth, and they never appear again. This part of Kentucky is the most remarkable portion of the known world, and although now neglected, in a time to come is surely destined to an extended distinction. I have referred only to the surface, the skin formation of this honeycombed labyrinth, the entrance to the future wonderland of the world. Portions of such a superficial cavern maze have been traversed by man in the ramifications known as the Mammoth Cave, but deeper than man has yet explored, the subcutaneous structure of that series of caverns is yet to be investigated. The Mammoth Cave as now traversed is simply a superficial series of grottoes and passages overlying the deeper cavern field that I have described. The explored chain of passages is of great interest to men, it is true, but of minor importance compared to others yet unknown, being in fact, the result of mere surface erosion. The river that bisects the cave, just beneath the surface of the earth, and known as Echo River, is a miniature stream: there are others more magnificent that flow majestically far, far beneath it. As we descend into the earth in that locality, caverns multiply in number and increase in size, retaining the general configuration of those I have described. The layers of rock are thicker, the intervening spaces broader; and the spaces stretch in increasingly expanded chambers for miles, while high above each series of caverns the solid ceilings of stone arch and interarch. Sheltered under these subterrene alcoves are streams, lakes, rivers and water-falls. Near the surface of the earth such waters often teem with aquatic life, and some of the caves are inhabited by species of birds, reptiles and mammals as yet unknown to men, creatures possessed of senses and organs that are different from any we find with surface animals, and also apparently defective in particulars that would startle persons acquainted only with creatures that live in the sunshine. It is a world beneath a world, a world within a world--” My guide abruptly stopped.

I sat entranced, marveling at the young-old adept’s knowledge, admiring his accomplishments. I gazed into the cavity that yawned beneath me, and imagined its possible but to me invisible secrets, enraptured with the thought of searching into them. Who would not feel elated at the prospect of an exploration, such as I foresaw might be pursued in my immediate future? I had often been charmed with narrative descriptions of discoveries, and book accounts of scientific investigations, but I had never pictured myself as a participant in such fascinating enterprises.

“Indeed, indeed,” I cried exultingly; “lead me to this Wonderland, show me the entrance to this Subterranean World, and I promise willingly to do as you bid.”

“Bravo!” he replied, “your heart is right, your courage sufficient; I have not disclosed a thousandth part of the wonders which I have knowledge of, and which await your research, and probably I have not gained even an insight into the mysteries that, if your courage permits, you will be privileged to comprehend. Your destiny lies beyond, far beyond that which I have pictured or experienced; and I, notwithstanding my opportunities, have no conception of its end, for at the critical moment my heart faltered--I can therefore only describe the beginning.”

Thus at the lower extremity of Biswell’s Hill, I was made aware of the fact that, within a short time, I should be separated from my sympathetic guide, and that it was to be my duty to explore alone, or in other company, some portion of these Kentucky cavern deeps, and I longed for the beginning of my underground journey. Heavens! how different would have been my future life could I then have realized my position! Would that I could have seen the end. After a few days of uneventful travel, we rested, one afternoon, in a hilly country that before us appeared to be more rugged, even mountainous. We had wandered leisurely, and were now at a considerable distance from the Cumberland River, the aim of my guide being, as I surmised, to evade a direct approach to some object of interest which I must not locate exactly, and yet which I shall try to describe accurately enough for identification by a person familiar with the topography of that section. We stood on the side of a stony, sloping hill, back of which spread a wooded, undulating valley.