As it was evident that the 'Ancon sin salida' was within Piazzi and Ceres Islands, up the west coasts of which they had passed, Lieut. Skyring left the schooner moored in Relief Harbour, and proceeded, on the 4th August, to the southward, in a whale-boat with Mr. Kirke; but he took no more than a week's provisions, that time being all he could devote to this exploration.
The 4th, 5th, and 6th, Lieutenant Skyring employed in pulling or sailing to the southward and eastward, through winding and intricate passages; although strong winds and much heavy rain annoyed him, and impeded his progress.
On the 7th the weather was much more favourable than it had lately been. The boat pulled and sailed to the southward, and at noon Lieutenant Skyring ascended a height,[[139]] having on each side of it a deep opening, but he was disappointed in the view; and, after taking bearings, pulled round the adjacent bights, one of which was exactly opposite Artist Bay, in Smyth Channel, and so near it that the two waters were only separated by a few hundred yards;[[140]] the other,[[141]] eastward of the height, was large, and closed at the bottom by very low lands. It was directly supposed to be the 'Ancon sin Salida;'[[142]] but Sarmiento's description, and the chart compiled by Burney,
were insufficient to enable them to decide with any degree of certainty. After looking round this bay, they continued to the eastward, and passed a point beyond which there was apparently a wide channel; having run about six miles down it without discovering any termination, they hauled their boat up on the beach for the night.
On the 8th, two canoes were noticed on the west shore; but seeing strangers the natives, apparently much frightened, all landed, except an old man; and taking with them what they most valued, hid themselves among the brush-wood, leaving their canoes fastened to the sea-weed. By some Fuegian words of invitation, the men were, however, induced to approach and traffic, receiving for their otter skins whatever could be spared. In appearance and manner these Indians were exactly similar to the Fuegians; and by their canoes only, which were built of planks, could they be distinguished as belonging to another tribe.
After leaving the natives, the boat passed Cape Earnest, and Lieutenant Skyring observed a wide channel leading north and then N.N.W.;[[143]] also, another opening to the eastward. The wind being easterly, he ran some distance to the northward, to gain more knowledge of the first inlet; and having gone ten or twelve miles from Cape Earnest, and observing the opening for eight miles beyond to be as wide as where they then were, he concluded it to be a channel, or else a deep sound terminated by low land, for there was evidently a division in
the mountains, such as to justify this belief. Returning, they entered the smaller opening to the eastward, and were almost assured of its being a channel; for when they were between the points, many porpoises and seals were observed, and a tide was found setting westward, at the rate of two knots. At dark, they hauled their boat on the beach of an excellent bay, at the north side of the narrow reach, and secured her for the night.
On the 9th, shortly after daylight, they set out in a N.E. direction to ascertain the truth of their supposition; and before noon knew, beyond a doubt, that they were correct in their belief, being in the narrows of a channel before unknown, that had eluded Sarmiento's notice. These narrows, which Lieutenant Skyring felt assured would lead to a large opening, were upwards of three miles in length, and generally about one-third of a mile in breadth. A strong tide took the boat through; and at the N.E. extremity, where the narrows were reduced to four hundred yards in width, the water, although a neap-tide, rushed at the rate of four knots, forming whirling eddies, which were carefully avoided by Lieutenant Skyring. At spring-tide, the strength of these rapids would probably not be less than seven knots.
Having passed through them, a clear channel was seen, upwards of two miles wide, running to the N.b.E. for, at least, eight miles, and then turning directly eastward, between moderately high land. Another channel, nearly a mile and a half wide, trended to the S.E. for two or three miles, and then also turned to the eastward. Here they stopped. Lieutenant Skyring regretted extremely not being able to prosecute the discovery, and have one more view from the eastern point of the N.E. channel; but as only one day's provisions remained, it would have been imprudent to delay his return. It was evident, that they had passed through the range of the Cordilleras,[[144]] for to the eastward the country appeared totally different, the highest hill not being above seven hundred feet. The opening to the N.E. was thought to communicate with the 'waters' lately discovered by Captain Fitz Roy. The latitude
was obtained on Point Return; and in the afternoon, reluctantly but anxiously, they retraced their way, and passed that night at their former quarters, in Whale-boat Bay.