Be this as it may, there are at least two points which we may assume negatively with regard to these dolmens. The first is, that they do not mark battle-fields: they have none of the appearance of such monuments. The second is, that as there is no capital or fertile country in their neighbourhood, they are not a royal cemetery; they are not, indeed, claimed, even in the remotest manner, by any of the royal races of Ireland. They are, so far as we can see, the sepulchres of a foreign colony settled on this spot. Whether this is probable or not must, of course, depend on a comparison of these monuments with those in the countries from which they are supposed to have come. But, in the meanwhile, it may be assumed, as an hypothesis which at least accounts for the phenomena as we find them in Ireland, even when judged of by their own internal evidence alone. * * * * * One of the most interesting of the Irish dolmens is that known as the Giant's Grave, near Drumbo, about four miles south from Belfast. The interest attached to this monument does not, however, arise so much from the grandeur of the structure itself, though it may be considered a first-class example and very tolerably perfect, but from its standing solitary in the centre of the largest circle in these islands, Avebury only excepted. The circle is about 580 feet in diameter, and consequently more than six acres in extent, and is formed, not as at Avebury or Arbor Low, by a ditch dug inside, and the earth so gained being used to form a rampart, but by the top of a hill being levelled and the earth removed in so doing being thrown up so as to form a circular amphitheatre. Although, consequently, the rampart is not so high outside as at Avebury, the whole surface internally having been lowered, the internal effect is very much grander.[259] What, then, was the object of this great earthwork with one solitary dolmen in the centre? Was it simply the converse of such a mound as that at New Grange? Was it that, instead of heaping the earth over the sepulchral chamber, they cleared it away and arranged it round it, so as to give it dignity? Or was it that funereal games or ceremonies were celebrated round the tomb, and that the amphitheatre was prepared to give dignity to their performance? These are questions that can only be answered when more of these circles are known and compared with one another, and the whole subject submitted to a more careful examination than has yet been the case. My impression is that it is the grave of a chief, and of him only, and that it is among the most modern of its class.