Stephens mentions that the Indians of his day were very superstitious about the hole and believed it haunted. This is not surprising, for even to-day, after sixty years' further contact with civilisation, weird stories are associated with most of the buildings. There are other of these secret rooms with entrances from the top both at Labna, Uxmal, and elsewhere. The ancient use of these _chultunes_, as the Mayans call them, has been much discussed, and Stephens, we think quite rightly, rejected the idea that they were reservoirs for the storing of water. It is far more probable that they were storerooms for grain or other eatables, or possibly treasure-houses; though we incline to the belief that they may have been prisons; a suggestion which we think we are the first to advance. Standing at right angles to the eastern end of the palace, facing westward, is a second building, one-storeyed, divided into eleven rooms. It is a solid structure in fair preservation, and in singular contrast with the palace in being almost entirely devoid of decoration or carving. But the most remarkable building at Labna stands on a mound about 50 feet high, its slopes now a mass of shrub and débris. It consists of a two-roomed structure which, by reason of the perpendicular wall that rises up some 30 feet above the roof-level, is one of the most extraordinary in Yucatan. Most curious is the effect of the isolated position of this wall, which towers above the ruined rooms of the south side. It is slotted with narrow perpendicular apertures like the window openings so often seen in a Norman castle wall. It is elaborately carved with designs in deep relief, now so ruined that it is next to impossible, at the distance at which one is obliged to stand from the wall, to follow the original scheme of ornamentation. Along the top was once a row of death's-heads. Beneath were two lines of human figures, of which only arms and legs now appear. Over what was the centre doorway are the remains of a colossal figure with beneath it what certainly looked to us like a phallic emblem. The whole of the wall still bears trace of the colours with which its extraordinary carvings were once painted. There can be little doubt that, like the Castillo at Chichen, this building was of a religious nature, and it is one more proof of the extraordinary versatility of the ancient Mayan architects.