He had come to the unknown world at last, and from his manuscript it is clear that he viewed the formless landscape as proudly and exaltedly as ever his fellow-countryman Balboa viewed the new-found Pacific from that unforgettable peak in Darien. Charging Buffalo had turned back at this point, driven by fear of something which he would only describe vaguely and evasively as a herd of bad cattle, neither horse nor buffalo, but like the things the mound-spirits rode at night — but Zamacona could not be deterred by any such trifle. Instead of fear, a strange sense of glory filled him; for he had imagination enough to know what it meant to stand alone in an inexplicable nether world whose existence no other white man suspected.
The soil of the great hill that surged upward behind him and spread steeply downward below him was dark grey, rock-strown, without vegetation, and probably basaltic in origin; with an unearthly cast which made him feel like an intruder on an alien planet. The vast distant plain, thousands of feet below, had no features he could distinguish; especially since it appeared to be largely veiled in a curling, bluish vapour. But more than hill or plain or cloud, the bluely luminous, coruscating sky impressed the adventurer with a sense of supreme wonder and mystery. What created this sky within a world he could not tell; though he knew of the northern lights, and had even seen them once or twice. He concluded that this subterraneous light was something vaguely akin to the aurora; a view which moderns may well endorse, though it seems likely that certain phenomena of radio-activity may also enter in.
At Zamacona’s back the mouth of the tunnel he had traversed yawned darkly; defined by a stone doorway very like the one he had entered in the world above, save that it was of greyish-black basalt instead of red sandstone. There were hideous sculptures, still in good preservation and perhaps corresponding to those on the outer portal which time had largely weathered away. The absence of weathering here argued a dry, temperate climate; indeed, the Spaniard already began to note the delightfully spring-like stability of temperature which marks the air of the north’s interior. On the stone jambs were works proclaiming the bygone presence of hinges, but of any actual door or gate no trace remained. Seating himself for rest and thought, Zamacona lightened his pack by removing an amount of food and torches sufficient to take him back through the tunnel. These he proceeded to cache at the opening, under a cairn hastily formed of the rock fragments which everywhere lay around. Then, readjusting his lightened pack, he commenced his descent toward the distant plain; preparing to invade a region which no living thing of outer earth had penetrated in a century or more, which no white man had ever penetrated, and from which, if legend were to be believed, no organic creature had ever returned sane.
Zamacona strode briskly along down the steep, interminable slope; his progress checked at times by the bad walking that came from loose rock fragments, or by the excessive precipitousness of the grade. The distance of the mist-shrouded plain must have been enormous, for many hours’ walking brought him apparently no closer to it than he had been before. Behind him was always the great hill stretching upward into a bright aërial sea of bluish coruscations. Silence was universal; so that his own footsteps, and the fall of stones that he dislodged, struck on his ears with startling distinctness. It was at what he regarded as about noon that he first saw the abnormal footprints which set him to thinking of Charging Buffalo’s terrible hints, precipitate flight, and strangely abiding terror.
The rock-strown nature of the soil gave few opportunities for tracks of any kind, but at one point a rather level interval had caused the loose detritus to accumulate in a ridge, leaving a considerable area of dark-grey loam absolutely bare. Here, in a rambling confusion indicating a large herd aimlessly wandering, Zamacona found the abnormal prints. It is to be regretted that he could not describe them more exactly, but the manuscript displayed far more vague fear than accurate observation. Just what it was that so frightened the Spaniard can only be inferred from his later hints regarding the beasts. He referred to the prints as ‘not hooves, nor hands, nor feet, nor precisely paws — nor so large as to cause alarm on that account’. Just why or how long ago the things had been there, was not easy to guess. There was no vegetation visible, hence grazing was out of the question; but of course if the beasts were carnivorous they might well have been hunting smaller animals, whose tracks their own would tend to obliterate.
Glancing backward from this plateau to the heights above, Zamacona thought he detected traces of a great winding road which had once led from the tunnel downward to the plain. One could get the impression of this former highway only from a broad panoramic view, since a trickle of loose rock fragments had long ago obscured it; but the adventurer felt none the less certain that it had existed. It had not, probably, been an elaborately paved trunk route; for the small tunnel it reached seemed scarcely like a main avenue to the outer world. In choosing a straight path of descent Zamacona had not followed its curving course, though he must have crossed it once or twice. With his attention now called to it, he looked ahead to see if he could trace it downward toward the plain; and this he finally thought he could do. He resolved to investigate its surface when next he crossed it, and perhaps to pursue its line for the rest of the way if he could distinguish it.