THE IRISH ARAN. 39 
less flattened slabs, which are easily piled up. The general plan 
is that of an inner enclosure with two outer concentric walls, the 
latter being protected by a stone chevaux de frise, covering a con- 
siderable extent of ground. No two of the duns are planned 
exactly in the same way, but the largest and most striking specimen 
is Dun Angus or Dun Eanes (Plate I., fig. r). Dun Eanes is 
built on the brow of the highest precipice in the island, 302 feet 
above the sea level, and the descent of which is so sheer that the 
islanders are in the habit of fishing from its edge, with the aid of 
ashort stick or rod, not much more than a yard in length. From the 
position of this dun on the edge of a cliff, there is no necessity for 
the completion of the circle of the wall, which is, therefore, built 
in the shape of a horse-shoe, the space enclosed by which is 150 
feet in length, by 142 feet in width. The circuit of the wall of the 
inner enclosure is the only one of the walls without any other 
opening than a doorway. The wall is 13 feet wide, and averages 
18 feet in height. It is built up on the inner and outer faces of 
regularly shaped stones, the space between being filled with rubble 
(Plate I., fig. 2). On the inner side are two stone platforms, 
reached by flights of stone steps. In this wall there were originally 
two doorways, one of which is now closed by the inner wall, while 
the open one has a width of three feet four inches at the top, anda 
little more at the bottom, the top being formed by large flagstones 
piled one above the other. In the breadth of the wall on the north- 
west side there is a passage or chamber. In the enclosure are the 
remains of stone houses or cloghauns. The outer walls have 
openings left in them, but the openings in the middle and outer 
walls are placed at some considerable distance apart, and the 
whole protected by the sharp stones of the chevaux de frise 
(Plate II., fig. 3). The whole extent of the sea front between the 
outer walls is 1,150 feet. 
_ Of these duns, there are four in the large island: these are, 
_ Dun Angus, which I have just described; Dun Oghill (Plate II., 
fig. 4), situated about 400 feet above the sea level, and not far 
from the highest point of the island; Dun Onacht (Plate IIT, 
fig. 5), which is in excellent preservation, the walls being 15 feet 
