Narrative of the surveying voyages of his majesty's ships Adventure and Beagle (vol.2- Appendix): between the years 1826 and 1836 : describing their examination of the southern shores of South America, and the Beagles's circumnavigation of the globe

212 APPENDIX. is no channel between the northern and middle islet, as it is blocked by breakers : a vessel may anchor about half a mile from any part of the beach in from six to eight fathoms, sandy bottom. The landing is not good, the best is on the rocks near the entrance ; but nothing could be embarked from there : the east end of the beach is the best for that purpose. From the land to the northward, running so far westward, it is not Hkely that a heavy sea would be caused by a northerly gale. Temblador is a small cove in the east side of TortoraliUo, but the landing there is worse than on the other beach, and it is not so well sheltered. About three miles to the northward of TortorahUo, there is the small island of Chungunga ; it is about a mile from the shore, and is a good mark for knowing the port : there is a rocky point a-breast of it ; a little in-shore of which there is a remarkable saddle hill, with a nipple in the middle, which, to a person coming from the southward, appears as the extreme of the high range, that runs thence to the eastward of TortoraliUo, and is from two to three thousand feet high. A little to the northward of Point Chtmgunga, there is a large white sand-patch, which is seen distinctly from the westward ; it is at the south end of the Chores beach, which runs for seven or eight miles to the north-west, to Point Chores ; a heavy surf always breaks Upon it. Off Point Chords there are three islands, the inner one is low and nearly joins the shore ; nothing but a boat can pass inside it. About a mile to the westward of this island, there is another small island ; between them the channel is clear of danger. To the south- west of this island about a mUe, is the largest of the Choros islands ; it is about a mUe long, the top is very much broken, and at the south-west end it very much resembles a castle : there is a small pyramid off the south end, and rocks break about a quarter of a mile from the shore. Tlie channel between the two outer islands is clear of danger ; but about half a mUe to the westward of the small island, there is a rock nearly awash. Five miles to the south-east of the southern Choros Island, there is a very dangerous reef of rocks only a little above the water. Point Carrisal is a low rocky point, about five miles to the north- ward of Point Choros, with a remarkable round hummock ; to the