A third cave, situated three and a half miles from that of Knockmore, and over four from the police station of Boho, contains some very interesting examples of cavern scorings. This weird spot is worth visiting, though there is no road running nearer to it than at a distance of four miles. The name of the place is Loughnacloyduff, or ‘Lake of the dark trench.’ The lake, or lough, which covers about one acre, is bounded on its northern side by a shattered cliff of yellowish sandstone, rising to a height of perhaps thirty feet above the level of the water. Within the face of this rock are several caverns, two of which present every appearance of being, in part at least, artificial. The largest measures about 6 feet in height, by about the same in breadth, and 10 in depth. The sides and roof are extremely rugged, except here and there where some little care appears to have been exercised for the reception of a series of scorings of various kinds, any notice of which, up to the time of our visit, had not, as far as we are aware, been published. The principal cave is connected with a second and smaller one, lying upon its western side, by an aperture in the partition of rock, by which, but for this provision, the two chambers would be completely severed. The lesser cavern is small, rude and uninscribed, but sufficiently large and dry to have been used as a sleeping apartment by the primitive occupants. The carvings at Loughnacloyduff consist chiefly of crosses enclosed within an apparent lozenge; of starlike designs; and of strokes which look very like a species of Ogam writing. The caverns, once perhaps the home of the cave-dweller, are now the dens of wild animals--the fox and the brock or badger, as the bones of other animals and the tattered plumage of birds testify. In our observations on Caves, we have confined ourselves to those which are natural, or partly artificial, rock-caverns, and in no instance referred to the souterrains--underground passages and chambers, lined with drystone masonry and roofed over with flags, found very plentifully in various parts of the country, and too carelessly or vaguely described by some writers under the title of ‘Caves.’ These will be dealt with in a subsequent chapter.