Narrative of the surveying voyages of His Majesty's ships Adventure and Beagle, between the years 1826 and 1836. Fitzroy Robert
it.
Next day we reached Ainsworth Harbour, which is of the same character as Parry Harbour, and affords perfect security for small vessels: by dint of sweeping, we reached a secure anchorage in a cove at the south-east corner.
The bottom of the port is formed, as I before said, by an immense glacier, from which, during the night, large masses broke off and fell into the sea with a loud crash,52 thus explaining the nocturnal noises we had often heard at Port Famine, and which at the time were thought to arise from the eruption of volcanoes. Such were also, probably, the sounds heard by the Spanish officers during their exploration of the Straits, whilst in the port of Santa Monica, where they had taken refuge from a violent gale of wind.53
The harbour was full of fragments of ice, the succeeding morning, drifting into the Sound, where the sea-water, being at a higher temperature than the air, rapidly melted them.
Since our departure from Port Waterfall, the weather had been mild, clear, and settled; but as it wanted only three days of the change of the moon, at which period, as well as at the full, it always blew a gale, I wished to reach a place of security in the Gabriel Channel or Magdalen Sound.
Near the islands of Ainsworth Harbour, three canoes passed us, steering across the Sound, each with a seal-skin fixed up in the bow for a sail; and we recognised in them the party left at Port Cooke, among whom was the Indian who had been detected in stealing a tin pot. They did not come along-side; but as we went by, pointed to the north, apparently urging us to go in that direction.
We had noticed several wigwams at Parry and Ainsworth Harbours, which shows that they are much frequented by Indians, perhaps on their way to the open low country east of Mount Hope, where numerous herds of guanacoes may be found.
Porpoises and seal were not scarce in this inlet, and in the entrance there were many whales. The presence of seal and whales made me think it probable there was a channel; but I believe every person with me was satisfied of its being a sound, terminating under Mount Hope. Since my later experience of the deceptive character of some passages in Tierra del Fuego (the Barbara Channel, for example), I have felt less certain that there may not be a communication with the low land, behind Mount Hope, round its northern base. The improbability was, however, so great, – from the bottom of the sound being shoal, – from the very slight tide-stream, – and from the information of the Natives; who evidently intended to tell us we could not get out to sea, – that we did not consider it worth while to make another examination.
I have before observed that the strata of the slate rocks, in the Strait, dip to the S.E.; and I found that they dip similarly all the way to the bottom of this inlet, which I named Admiralty Sound.
The north side, like that of the Gabriel Channel, is steep, without indentations, excepting where there is a break in the hills; but on the south shore there are many coves, and bights, the cause of which is shown in the accompanying imaginary section of the Gabriel Channel. The same cause operates on the outline of the north shore of the reach of Cape Froward, westward as far as Cape Holland, where the rock assumes a still more primitive form. Its general character, however, is micaceous slate, with broad veins of quartz; the latter being particularly conspicuous at Port Gallant.
The following slight sketch, intended to represent an imaginary section of such an opening as the Gabriel Channel, may also serve to give a general idea of many Fuegian anchorages; – of deep water passages existing between the almost innumerable islands of Tierra del Fuego; – and of the effects of those sudden, and violent gusts of wind, – so frequent and dangerous, – commonly called hurricane-squalls,54 or williwaws.
The rock, of course, decomposes equally on both sides; but on that exposed to the south wind, it breaks off in flakes parallel to the direction of the strata, and therefore does not make the course of the beach more irregular; while on the other side it moulders away transversely to the direction of the dip, leaving holes, in which water lodges, and hastens decomposition by entering deeply into the interstices. Water, air, and frost decompose the rock, and form a soil, which, if not too much exposed to the wind, is soon occupied by vegetation.
The rugged faces of the cliffs, on the southern shore, caused by the rock decomposing across the grain, collect sand and mud; and hence it happens that anchorages are frequently found on one side, whilst, on the other, the anchor will not hold, from the steepness of the ground; there being nothing upon the smooth declivity to retain mud and sand before it gets to the bottom; which, in most cases known to me, lies far beyond the reach of the anchor.
After a tedious and difficult passage through the Gabriel Channel, we anchored in a snug harbour within the entrance of Magdalen Channel, on the west side, under a peaked hill called by Sarmiento 'El Vernal,' – in our plan, the 'Sugar-loaf.' The entrance is about a quarter of a mile wide; but after a few hundred yards the harbour opens, extending in for nearly a mile. It is of easy depth; seven fathoms in the entrance, and four, five, and six fathoms within; so that it is very convenient for a small vessel: to us, indeed, it was a most welcome discovery. The land rises, around this cove, to the height of two or three thousand feet. It is covered with Beech, and Winter's-bark, and near the water is adorned with large groves of Fuchsia, Berberis, and the common shrubs of Port Famine, growing so thickly as to form an almost impenetrable jungle; but, notwithstanding the picturesque character of its scenery, the towering height of the hills, which exclude the sun's rays for the whole day, during the greater portion of the year, renders it a gloomy and melancholy spot.55
We found a family of Fuegians in the inner harbour. Three canoes were hauled up on the beach, but their owners were not at first visible. At last, after our repeatedly calling out 'Ho-say, ho-say,' they appeared, and, rather reluctantly, invited us, by signs, to land. There seemed to be fourteen or fifteen people, and seven or eight dogs. Mr. Wickham and Mr. Tarn went on shore to these natives, who exhibited some timidity, until a hideous old woman began to chatter, and soon made them understand that the young men (Lā-ā-pas) were absent on a hunting excursion, but were every moment expected to return. There were only three men with the women and children. To inspire them with confidence in our good intentions, Mr. Wickham gave each man a red cap, and some other trifles. One of them complained of being sick, but I rather imagine his illness was feigned, and the others did not at all seem to like our visit. By degrees their fears subsided, and, restraint being laid aside, an active trade began; in which several otter skins, shell-necklaces, spears, and other trifles, were obtained from them in exchange for beads, buttons, medals, &c. The otters are caught by the help of dogs, on which account, principally, the latter are so valuable.
These people were slightly clothed with skins of the seal and otter, but some had pieces of guanaco mantles over their shoulders, whence we supposed that they were either of the same tribe, or at peace, with the Indians of Admiralty Sound: unless, indeed, they trade with the Patagonian Indians; but such is the poverty of the Fuegians, they can scarcely possess any thing of value sufficient to exchange with the goods of their northern neighbours, unless it be iron pyrites, which I think is not found in the open country inhabited by the Patagonian Indians, and, from the facility with which it yields sparks of fire, must be an object of importance.
We were not a little amused by the surprise which these natives showed at the things in our possession, and by the effect produced in their countenances when they saw any thing extraordinary: the expression was not that of joy or surprise, but a sort of vacant, stupified, stare at each other. They must have been very suspicious of our intentions, or very much excited by what they had seen during the day, as throughout the night an incessant chattering of voices was heard on shore, interrupted only by the barking of their dogs.
Looking down the Magdalen Inlet, we saw two openings, which, while the hills were enveloped in mist, had the appearance of being channels. We proceeded for some distance into the more westerly of the two, but found that it was merely a sound, terminated by high land. The boat was then steered under a steep mass of black mountainous land,56 the summit of which is divided into three peaks, which Sarmiento called 'El Pan de Azucar de los Boquerones' (the Sugar-loaf of the Openings). We ran southward, fifteen
At high tide the sea-water undermines, by thawing, large masses of ice, which, when the tide falls, want support, and, consequently, break off, bringing after them huge fragments of the glacier, and falling into the still basin with a noise like thunder.
"En los dias 24, y 25, oimos un ruido sordo, y de corta duracion, que, por el pronto, nos pareció trueno; pero habiendo reflexîonado, nos inclinamos à creer que fué efecto de alguna explosion subterranea, formado en el seno de alguna de las montañas inmediatas, en que parece haber algunos minerales, y aun volcanes, que están del todo ó casi apagados, movièndonos a hacer este juicio, el haberse encontrado, en la cima de una de ellas, porcion de materia compuesta de tierra y metal, que en su peso, color, y demas caracteres, tenia impreso el sello del fuego activo en que habia tomado aquel estado, pues era una perfecta imagèn de las escorias del hierro que se ven en nuestras ferrerías. —
No canvas could withstand some of these squalls, which carry spray, leaves, and dirt before them, in a dense cloud, reaching from the water to the height of a ship's lower yards, or even lower mast-heads. Happily their duration is so short, that the cable of a vessel, at anchor, is scarcely strained to the utmost, before the furious blast is over. Persons who have been some time in Tierra del Fuego, but fortunate enough not to have experienced the extreme violence of such squalls, may incline to think their force exaggerated in this description: but it ought to be considered, that their utmost fury is only felt during unusually heavy gales, and in particular situations; so that a ship might pass through the Strait of Magalhaens many times, without encountering one such blast as has occasionally been witnessed there. – R. F.
"sub rupe cavatâ
Arboribus clausam circum atque horrentibus umbria."
Mount Boqueron.