One of the most important in size, as well as in general interest; is the one at New Grange, county Meath. “The cairn, which even in its present ruinous condition measures about seventy feet in height, and is nearly three hundred feet in diameter, from a little distance presents the appearance of a grassy hill, partly wooded; but upon examination the coating of earth is found to be altogether superficial, and in several places the stones, of which the hill is entirely composed, are laid bare. A circle of enormous stones, of which eleven remain above ground,[18] originally encircled its base. The opening (of which an engraving is shown on fig. 44) was accidentally discovered about the year 1699, by labouring men employed in the removal of stones for the repair of a road. The gallery, of which it is the external entrance, extends in a direction nearly north and south, and communicates with a chamber, or cave, nearly in the centre of the mound. This gallery, which measures in length about fifty feet, is at its entrance from the exterior about four feet in height, in breadth at the top three feet two inches, and at the base three feet five inches. These dimensions it retains, except in one or two places, where the stones appear to have been forced from their original position, for a distance of twenty-one feet from the external entrance. Thence towards the interior its sides gradually increase, and its height where it forms the chamber is eighteen feet. Enormous blocks of stone, apparently water-worn, and supposed to have been brought from the mouth of the Boyne, form the sides of the passage; and it is roofed with similar stones. The ground plan of the chamber is cruciform; the head and arms of the cross being formed by three recesses, one placed directly fronting the entrance, the others east and west, and each containing a basin of granite. The sides of these recesses are composed of immense blocks of stone, several of which bear a great variety of carvings.[19] In front of the entrance (fig. 44) will be seen one of these carved stones.” [Illustration: Fig. 44.] [Illustration: Fig. 45.] [Illustration: Fig. 46.] [Illustration: Fig. 47.] [Illustration: Fig. 48.] [Illustration: Fig. 49.] [Illustration: Fig. 50.] At Dowth and Nowth (Dubhath and Cnobh), very similar chambered tumuli exist, the former of which is also remarkable for its sculptural stones, which bear a strong resemblance to those at New Grange. The Cairn of Dowth here engraved (fig. 45), is of immense size, and contains a cruciform chamber similar to that at New Grange, with a passage twenty-seven feet in length, composed--as was the chamber--of enormous stones. On some of the stones were carvings and Oghams. The mouth of the passage leading to the cruciform chamber is shown on fig. 46. [Illustration: Fig. 51.] [Illustration: Fig. 52.] [Illustration: Fig. 53.]