Under the skilful treatment of the professor Mildmay made steady and rapid progress toward recovery from the very first; the baronet and the colonel had therefore no hesitation about carrying out a project which had been under discussion between them for the last two or three days, and which was neither more nor less than a pedestrian excursion to the far distant table-land which they had first sighted from the sea. They estimated that this goal of their journey, upon which they expected to find the actual site of the Northern Pole of the earth, must be about sixty miles distant from the ship; and they considered that the trip there and back would occupy them about six days. It would of course have been very much easier, and more convenient in every way, to have made the journey on board the Flying Fish; but the professor was busy with the preparation of his mammoth, the skin of which he had carefully stretched and pegged out on the ground alongside the ship, and was so averse to the losing sight of it, even for a few hours, that it was soon decided the Flying Fish must not be moved for the present. After all, the journey would probably not involve any very great amount of hardship; it simply meant camping out for five or six nights, or at least those hours of the twenty-four which did duty for night. And this the two seasoned hunters looked forward to as rather a pleasant change than otherwise.
The necessary preparations were all made on the previous evening, and after breakfast on the appointed day the two adventurers set out, taking leave of Mildmay—who was already out of bed again—and of the professor, who, to tell the truth, was heartily glad to be left to the uninterrupted prosecution of his task.
They were in light marching order, having resolved to carry nothing which they could possibly do without; their previous experience of the country had taught them that game was pretty plentiful, and that they might safely depend upon their guns for the supply of their larder; and their stock of provisions consisted solely, therefore, of a few biscuits and a substantial flask of brandy each. The temperature was decidedly mild, and had been so ever since their arrival at “Elphinstone Land,” with settled fine weather, and they therefore carried nothing in the shape of extra clothing save a light macintosh each, which they bore securely strapped on the top of their knapsacks. The remainder of their impedimenta consisted of a double-barrelled gun for each man—one barrel being rifled and the other a smooth bore—two cartridge belts, one for the waist and the other for the shoulder, fully stocked; a formidable double-edged hunting knife each; a capacious waterproof bag containing a reserve supply of cartridges, and a small stock of matches and tobacco.
Their road for the first five or six miles led up a gentle acclivity, just sufficient to make itself felt, but not steep enough to render walking difficult or fatiguing. Then came a stretch of flat country, bounded on each side by the projecting spurs of a range of rugged hills of fantastic outline which stretched immediately across their path at a distance of some three or four miles or so. The pedestrians had not progressed very far across this plain before their attention became arrested by a curious phenomenon. The atmosphere immediately behind the range of hills last mentioned was thick with fleecy vapour, now so thin that the distant table-land could be dimly seen through it as through a veil, and anon so dense that it assumed a decided cloud-like shape upon which the unsetting sun shone with dazzling brilliancy. This thickening of the vapour seemed to occur at tolerably regular intervals of about twenty minutes each, and was immediately preceded by a sudden silvery gleam succeeded by a most brilliant and perfectly formed rainbow. The periodical recurrence of this singular phenomenon under a perfectly cloudless sky of course greatly excited the curiosity of the pedestrians, and they pushed rapidly forward, eager to ascertain the cause.
As they advanced, the encircling hills thrust their projecting spurs further and further into the narrowing plain, their slopes became steeper and more rugged, and rocks began to crop out here and there with increasing frequency through the lessening soil. A corresponding change of course occurred in the character of the landscape; it grew increasingly picturesque and wild at every step, and at length the travellers found themselves at the mouth of a narrow rocky boulder-strewn gorge bounded on either side by titanic masses of volcanic rock, rugged and moss-grown, with little patches of herbage here and there, or an occasional stunted pine growing out of an almost imperceptible fissure. The only signs of life in this wild spot consisted of a diminutive musk-ox here and there cropping the scanty herbage half-way up the apparently inaccessible height in spots from which it appeared equally impossible for the creature to advance or to retreat.
Plunging into this defile, the travellers advanced with steadily increasing difficulty, the boulders with which their path was strewed growing ever larger and more numerous until at length the narrowing road became completely choked with them, and the only mode of progression was that of a slow, toilsome, dangerous scramble. Still the pair pushed resolutely on, every minute hoping that the difficulties of the journey would come to an end, and every minute less willing to turn back and again encounter the obstacles already surmounted. At length the path became so narrow that one enormous boulder sufficed to completely block the way, whilst the perpendicular rocky walls of the chasm towered so far aloft that only the merest thread of sky was visible; the air grew chill and damp, and so deep a twilight gloom pervaded the place that it was difficult to distinguish any object more than half a dozen yards distant.
The weary travellers looked at each other in dismay. Was this to be the ineffectual ending of that long and toilsome scramble through the ravine? There was just one single narrow crevice between the huge boulder which blocked their way, and one of the precipitous walls which pressed so closely in upon them—a crevice left by the irregular shape of the block, and affording barely space enough for a man of robust proportions to squeeze himself through—and they determined that, before retracing their steps, they would at least satisfy their curiosity so far as to creep through this crevice and see what lay on the farther side. The baronet with some little difficulty squeezed through first, and his exclamation of astonishment quickly took the colonel to his side.
The pair found themselves in a narrow rent between the two vertical faces of rock—the projections of the one accurately corresponding with the indentations of the other, and clearly demonstrating that, at some distant period of the earth’s history, that mighty chasm had been suddenly torn open by a great natural convulsion awful in its intensity beyond all power of imagination. The rent was roofed in as it were by boulders which thickly hung suspended and jammed in at varying heights between the almost touching walls of the rift; and the adventurous explorers could not repress a shudder as they glanced aloft at these huge masses and thought of the consequences to themselves which would ensue should a projecting corner just then yield and suffer its parent rock to come crashing down to the bottom. Their first impulse was to beat a precipitate retreat; their second, to go forward; for at only a few yards’ distance before them the rift closed altogether, except at the very bottom, where a low cavern-like fissure dimly appeared. A hasty consultation passed between them, resulting in a determination to go forward and explore the fissure.
Fortunately for their purpose they had, at an early stage of their difficulties, provided themselves with a couple of stoutish pine branches—wrenched from their parent stems and hurled into the ravine perchance by some winter storm—to aid them in surmounting the difficulties of the way, and these they now determined to utilise if possible as torches.
With some little difficulty the smaller ends of these brands were induced to kindle; but, once fairly ignited, they blazed up bravely, and thus provided with the necessary lights the adventurers boldly pushed forward and plunged into the recesses of the fissure.