The Paredão Grande—A Cañon—A Weird Phenomenon—Troublesome Insects
We had reached a spot of most amazing scenery—the Paredão Grande—a giant hill mass displaying a great crater in its north side. Two high cones stood above the immense red-baked wall at its eastern end, where it was in huge blocks stratified in thicknesses varying from 15 to 20 ft. each. In that eastern section the strata were perfectly horizontal. On the western side of the crater was a colossal quadrangular mountain of red-baked rock—a solid mass of granite with a narrow band, slightly discoloured, all along its summit. There—above—we also perceived a slight grassy slope, and above it again a great natural wall in layers 6 ft. thick. From the bottom of the mountain this upper natural wall resembled the defences of a great castle built on the summit of the giant rock. In approaching this strange sight we had gone over extensive deposits of ashes and yellow lava pellets and balls.
A Vertical Mass of Solid Rock of a Brilliant Red Colour.
The elevation at the foot of this immense block was 1,970 ft., the summit of the rock 660 ft. higher—so that the reader can easily imagine how impressive this quadrangular block of bright red rock was, several hundred yards in length on each side and 201 metres high.
As we reached camp rather early I went to examine the block from all sides. On the southern side Alcides and I climbed up to within 30 ft. of the summit, and from that high point obtained a stupendous panoramic view of the great expanse of undulating country to the south and south-east, while it was almost absolutely flat to the west as far as the horizon line.
To the south-west were distinguishable some extraordinary-looking cylindrical table-lands—like immense sections of columns—rising well above the horizon line. To the south in the distance a peculiar formation of mountains could be seen—first a separate prismatic mountain like a gabled roof with a well-defined vertical high wall standing all along its longitudinal apex line. Parallel to this and to one another were three sets of mountains, with such steep sides that they seemed like gigantic walls standing up on the flat country. Behind them was a flat-topped plateau with a small cone rising above it. The sides of the latter plateau formed a steep escarpment. To the south-east was a domed plateau, red in its lower section, green on the top. Between this plateau and the last wall-like mountain, several hundred feet in height, stood a conical peak with a natural tower of rock upon it.
Beyond, to the south-east, could just be perceived two pyramidal mountains, but they were very distant and scarcely visible. The valley itself was greatly furrowed in deep, long channels. Due south were dome-like mounds—each of these, mind you, standing out individually upon an almost flat plain.
In the north-western corners of the great quadrangular Paredão rock I saw a spot where it would have been quite easy to climb up to the summit, as portions of the rock had crumbled down and had left an incline. But I had no object in making the ascent on that side, especially as I had already obtained the view I required from the south side. Also because I was heavily laden, carrying cameras, aneroids, a large prismatic compass, and three heavy bags of money slung to the belt round my waist, and did not feel up to the extra and useless exertion. Great arches with a span of over 80 metres were to be seen in the lower part of the western wall. To the south there was a huge spur of lava with the geometrical pattern upon its surface we had already observed elsewhere. In this particular case, too, it appeared to me that the peculiar net of surface channels had been formed in coming in contact with the air, and not underground in the boiling cauldron of the volcano when the ebullition of the rock ceased. They were only found at a lower elevation because they had gone down with a great subsidence which had taken place, and in which neither the quadrangular Paredão Grande, nor the peculiar isolated mountains we had observed from its height, had been affected. They had remained standing when all the rest sank for some six hundred feet and, in places, more. That might perhaps account for the extraordinary shapes of all those mountains, which could not otherwise be explained.
