The fourth was the one which had just been discovered, and which had excited the curiosity of the mayoral. It was a few feet outside of a wall which, as Don Simon said, might be traced through the woods, broken and ruined, until it met and enclosed within its circle the whole of the principal buildings. The mouth was covered with cement, and in the throat was a large stone filling it up, which the mayoral, on discovering it, had thrown in to prevent horses or cattle from falling through. A rope was passed under the stone, and it was hauled out. The throat was smaller than any of the others, and hardly large enough to pass the body of a man. In shape and finish it was exactly the same as the others, with perhaps a slight shade of difference in the dimensions. The smallness of this mouth was, to my mind, strong proof that these subterraneous chambers had never been intended for any purposes which required men to descend into them. I was really at a loss how to get out. The Indians had no mechanical help of any kind, but were obliged to stand over the hole and hoist by dead pull, making, as I had found before, a jerking, irregular movement. The throat was so small that there was no play for the arms, to enable me to raise myself up by the rope, and the stones around the mouth were insecure and tottering. I was obliged to trust to them, and they involuntarily knocked my head against the stones, let down upon me a shower of dirt, and gave me such a severe rasping that I had no disposition at that time to descend another. In fact, they too were tired out, and it was a business in which, on our own account at least, it would not do to overtask them. We were extremely disappointed in not finding any more vases or relics of any kind. We could not account for the one found in the chamber under the terrace, and were obliged to suppose that it had been thrown in or got there by accident. These subterraneous chambers are scattered over the whole ground covered by the ruined city. There was one in the cattle-yard before the hacienda, and the Indians were constantly discovering them at greater distances. Dr. Cabot found then continually in his hunting excursions, and once, in breaking through bushes in search of a bird, fell into one, and narrowly escaped a serious injury; indeed, there were so many of them, and in places where they were so little to be expected, that they made rambling out of the cleared paths dangerous, and to the last day of our visit we were constantly finding new ones.