In Lat. 7° 59′ N., Long. 81° E., about fourteen miles N.E. of Dambulla, and about seventeen miles nearly due W. of Parâkrama Bâhu's capital, Pulastipura, is the singular natural stronghold referred to in the Thirty-ninth Chapter of the Mahâvamsa, and first re-discovered by Major Forbes, of the Ceylon Civil Service, in the year 1831. Sir Emerson Tennent (Ceylon, vol. i. p. 15) says of it: “Sîgiri is the only example in Ceylon of those solitary acclivities, which form so remarkable a feature in the table-land of the Dekkan, starting abruptly from the plain with scarped and perpendicular sides; and converted by the Indians into strongholds, accessible only by precipitous pathways, or steps hewn in the solid rock.” And, again (vol. ii. p. 579): “This gigantic cylindrical rock starts upward to a height prodigious in comparison with its section at any point, the area of its upper surface being little more than an acre in extent. Its scarped walls are nearly perpendicular, and in some places they overhang their base.

The formation of this singular cliff can only be ascribed to its upheaval by a subterranean force, so circumscribed in action that its effects were confined within a very few yards, yet so irresistible as to have shot aloft this prodigious pencil of stone to the height of nearly 400 feet.” The height of the rock above the sea is probably more than this—a point which soon will be (if it is not already) settled by the Surveyors engaged in the Trigonometrical Survey of that part of Ceylon. I am also informed that the occurrence of so circumscribed and yet so irresistible a subterranean force is almost, if not quite impossible, and that the present position of Sîgiri, like that of the many similar strongholds in the table-lands of South India, may be more easily explained by a general subsidence of the soil around it. It is to be regretted that the geological history of Ceylon altogether has received so little attention; but it seems certain that Sîgiri owes its origin to the same force to which is due the great elevation which stretches for more than 150 miles in a N.E. direction from below Adam's Peak to Trinkomali, and forms the principal gneiss and granite mountain ranges of Ceylon, which, since their first appearance above the waters, have certainly undergone no second immersion. If this be so, then the crag of Sîgiri, which lies almost in the centre line of that upheaval, must be among those parts of the now habitable globe which first emerged from the deep, and have been longest accessible to man.