At length we arrived at a point almost on a level with the perpendicular wall of Roraima, but with a vast forest-clad gulf intervening. It had been evident to us from the first that our best method of proceeding would be to choose from one of these open savanna ridges any point in the straight-cut rock that appeared at all practicable for an ascent, and then by the aid of a compass to make our way direct to that spot across the wooded ravine. We afterwards found that the passage of this deep and precipitous ravine presented difficulties which were second only to those of the wall itself. The north wind swept so keenly over our elevated position that we were glad to seek shelter for a time under one of the great black boulders that lay around.
Our climb had made us thirsty, but we had to content ourselves with the water contained in the sheath bases of the leaves of the wild pines,[103] which grew in great numbers on the surrounding trees. These natural reservoirs contained a good supply of rain-water, but it was very old and full of insects.
Looking back over the country we had traversed, we saw a picturesque landscape of mountain and plain. Far below, the undulating yellow savanna was pierced at intervals by tongues of green forest; beyond, a few silver flashes marked where a stream ran through a narrow valley, and on its left towards the east rose the Sun mountain—Waëtipu—in a series of wooded terraces, and with its southern extremity crowned by a high sugar-loaf. From here, far away to the south, stretched a chain of blue hills with flickering spaces of shadowed sunlight between them, and on the edge of the horizon towered the great table mountains of Brazil, which, like colossal monoliths, contrasted with the peaks and domes of the adjacent ranges in Guiana. The scene was by no means grand but acquired a certain charm from the variety of colour diffused by the western sun. The arid savannas which had seemed so barren and dreary were now tinted with a soft green paling to silver-grey; the purple film of distance, which we knew was only the parched foliage of some forest belt, was streaked with golden lines, and the hard red rock shingle over which we had painfully trudged, gleamed and sparkled like early dew. Colour brightened the landscape, but life was wanting. No bird sang, no hut was visible, no wreath of smoke curled up from wood or plain, no moving object caught the eye as far as it could reach. Cows in the green valley by the river, a goat clambering about the rocks, or even an Indian banaboo would have relieved the loneliness of the picture. Once we thought we could distinguish a cluster of huts in a distant vale, but the sweeping shadows hindered any close observation.
From the open country we turned to the giant fortress which rose sternly above us. The contrast was sharp and decided. From the heights on which we stood, the wide-stretching savanna land seemed a grassy country over which a good horse could galop, jumping with ease the narrow forest belts which intersected the plains like hedges. But nothing less than a winged Pegasus could expect to attain the summit of the bare red wall that raised itself for hundreds and hundreds of feet, unrelieved by aught save a few tangled bushes and tasselled bunches of some wild grasses. Carefully we scanned every ledge and crevice, seeking some practicable spot to which we might direct our steps on the morrow. At the southern extremity of the eastern side, which we were facing, a ravine near a rounded tower-like rock, draped with grass and lichens, which recalled to my mind the Metella Tomb of the Roman Campagna on a gigantic scale, gave better promise of a foot-hold than anywhere else. But a closer examination showed that this fissure only separated the rounded mass, at about two-thirds of its height, from the rest of the mountain which then rose as perpendicular as in other places.
The following day when we resumed our explorations the results were similar. Near one of the falls an angle in the rock, and a fringe of shrubs running up for some distance along a deep crack, held out hopes of a practicable ascent, but they vanished in a plumb-line of wall without ridge or chink. Upon the elevated ridges we were not troubled by animal life, as besides a large rattlesnake, which one of the men killed, we found nothing except two goat-suckers’ nests, each containing a young one. But down on the savanna we were so plagued by a small black fly that life was almost insupportable. These insects attacked the eyes and ears, and bit severely, leaving a bright red mark with a black centre. Even the Indians were obliged, when in camp, to sit all day surrounded by dense volumes of smoke.
It was therefore with no regret that, after finding the ascent of the eastern side of Roraima impracticable, we left camp one day with hammocks and provisions—the latter now unfortunately reduced to little except flour, of which we had far too much—with the intention of exploring the south side. The nights were very cold, as the thermometer generally fell below 60 degs., but the days were intensely hot, and in walking over the open savannas we were much blistered by the sun, a circumstance which rendered the incessant attacks of the black flies more aggravating. As we crossed over the ridges, before turning towards the mountain, we passed a very pretty tree-filled hollow with precipitous sides and very deep. At one end of this chasm a fine stream emerged from underground, and after falling over the rocks in a picturesque cascade, wound round the base of the cliff and disappeared through a narrow outlet.
To reach an open point suitable for a survey, we passed over ground very similar to that on the eastern flank. There were the same steep spurs, the same widths of jungle, and the same black boulders, grass-covered and so slippery that the greatest caution was necessary in placing the feet, for a sprained ancle or a broken leg would have been of serious consequence in these wilds. At last we stood above the great ravine that surrounds the mountain, and commanded a near view of the southern wall. This side of Roraima is, if possible, even more precipitous than the eastern. The outline is similar, except in the centre, where it is wonderfully turreted and shaped with battlements. Here and there enormous black slabs appear to be let into the red stone as smoothly as if by hand, and in other spots quaint mosaic patterns can be traced. There were no waterfalls from the summit, but in three or four places the dark shiny lines showed where water had only recently ceased to flow. A fine cascade issued from the forest slope near the smooth western extremity, but we could not tell whence the water came. This we imagined must be the second fall of the Kamaiba, mentioned by Schomburgh as having a breadth of seventy yards. Although when we saw it we estimated its width at barely that number of feet, yet its diminished size could readily be accounted for by the exceptionally dry season.
From this point we had a splendid view of the eastern side of Kukenam, which projects beyond, and runs up parallel with the western flank of Roraima. Its steep wall, though seemingly perpendicular, did not present the same inaccessible front that Roraima did. North of its great waterfall, we could trace ledges covered with trees and bush, which to us seemed contiguous and continuous enough to reach the top. But Roraima was our goal, not Kukenam, and even to reach its base across the broad, dense forest valley that intervened, would have been the work of days. These southern slopes are actually more prolific in floral treasures than the eastern. The great fantastic black rocks which lie scattered about in infinite variety, are all clothed with agaves, cactuses, bromelias, gesnerias, mosses, and orchids. Every step reveals some new charm, every breath of air seems laden with a fresh sweetness; now it is the delicate fragrance of a yellow melastoma, and now the heavier odour of a chocolate-tinted odontoglot.
The soil on the southern side of Roraima was more moist than on the eastern, the plants were brighter, and the blossoms more abundant. In one place, which in our excursions we continually had to cross, there was a broad swamp, which was the last thing we expected to find on such elevated ground, traversed apparently by no stream. Here, grew a beautiful utricularia with dark blue flowers, a nepenthes, and various cœlogynes. There were also numerous sobralias,[104] but none were in flower, which was a great disappointment to us, as Schomburgh has pronounced this variety of orchidea to be the most fragrant and beautiful of its class. Near this swamp and hovering over the bell-blossoms of a thibaudia[105] we saw the only humming-bird that we met with in the locality; from the quick glance we obtained of it we could see it was not one of a very brilliant species, the plumage being of a reddish bronze.
It was always a relief to emerge on to this flowery marsh from the thick forest entanglement of the craggy ravine, and one day, after repeated failures to trace out the smallest likelihood of a possible ascent, we sat down on a rock near its edge, and agreed that the southern flank of Roraima was as impracticable as the eastern. One thickly-bushed crevice near the south-western end had cheered us with a prospect of success, but alas! between the wooded ledges were impassable walls of sheer rock, which neither man nor monkey could ascend. At another place the bush connection up to a certain point was only interfered with by an overhanging slab, but that projection was an insuperable impediment. Gradually the conviction was forced upon us that the Indians were right, and that Roraima was impregnable. That the north side, even if it were approachable through the wide-stretching primeval forest, was impossible of ascent we had no doubt, on account of the stupendous wall of rock we had seen—though at a distance—from Cashew Cottage. So now it only remained for us to see what we could of the western side. Of this flank we could only get glimpses by retiring towards Kukenam, and from savanna hills obtaining our view up the dividing valley.