The Adventures of Captain Horn by Frank R. Stockton

That night George Burke went off his watch at twelve o'clock, and a few minutes after he had been relieved, he did something he had never done before -- he deserted his ship. With his shoes and a little bundle of clothes on his head, he very quietly slipped down a line he had fastened astern. It was a very dark night, and he reached the water unseen, and as quietly as if he had been an otter going fishing. First swimming, and then wading, he reached the shore. As soon as he was on land, he dressed, and then went for a lantern, a hammer, and a cold-chisel, which he had left at a convenient spot.

Without lighting the lantern, he proceeded as rapidly as possible to the caves. His path was almost invisible, but having travelled that way so often, he knew it as well as he knew his alphabet. Not until he was inside the entrance to the caves did he light his lantern. Then he proceeded, without loss of time, to the stone mound. He knew that the ladder had been left there, and, with a little trouble, he found it, where Shirley had put it, behind some rocks on the floor of the cave. By the aid of this he quickly descended into the mound, and then, moving the foot of the ladder out of the way, he vigorously began to brush away the dust from the stone pavement. When this was done, he held up the lantern and carefully examined the central portion of the floor, and very soon he discovered what he had come to look for. A space about three feet square was marked off on the pavement of the mound by a very perceptible crevice.