2 8 Proceedings of the Royal Irish Academy. 



France, two hill-forts in Switzerland, and a ring-wall in Mohne Island in the 

 Baltic. Inside are a few huts, round, with square annexes, and a large ring- 

 wall. Porth is a huge dry-stone wall, overthrown in early times, and com- 

 pleted by an earthwork. It has a group of huts and souterrains. In the 

 Mullet is a small entrenched headland, and the great walled platforms of Dun- 

 aneanir and Dunadearg. Inland, but not far from Belmullet, is the scarped 

 rock and oval ring-fort of Dundonnell (90 feet by 40 feet) rich in folk-lore. 

 Achill has injured Cathairs in the Sandhills and in the Bal of Dookinelly on 

 Slievemore, an entrenched drift-headland at Porteen, and two rocks so nearly 

 denuded of earth that the best evidence of their character lies in their names, 

 Dunnagappul and Dunmore. Possibly the two groups of " Doonty " rocks 

 were of this character. The name Giibadoon marks another cliff-fort on 

 Dooega Head, near the southern rock of that name. 



At Achillbeg are three more cliff-forts. One is already described in our 

 Proceedings. The great fort of Dun-Kilmore has a fosse, a stone-faced rampart, 

 and an inner ring-fort of similar design, enclosing an early cemetery, altars, 

 and a basin-stone. Within the fort are two subsidiary headlands, the Bun 

 and the Bangan, each entrenched. The two neighbouring forts must be 

 described here, if briefly, for they are closely connected with our main 

 subject. 



Duxnaglas, Achill (Ordnance Survey Map, 1 ISTo. 65).— Off the shore of 

 Carrowgarve, at the eastern end of the Blind Sound, or Bealachglass, is a 

 fragment of a headland called Doonagloss (Dun na glas) and " the Dun." It is 

 remembered that a " tower " stood on the rock some fifty to sixty years ago. 

 Crossing at low water by a painful and slippery stretch of boulders, and climbing 

 the steep though grassy side, we find a structure closely similar to the Doon 

 of Inishturk. A well-built dry-stone wall of slabs thickly covered with grey 

 lichen carefully conforms to the minutest features of the natural edge, 2 about 

 50 feet above the base. The rampart is usually about 6 feet high and 7 feet 

 thick, of good, rather open-jointed work, and along the north-west segment, 

 where it is best preserved, has the rare feature (in Co. Mayo) of a terrace 

 inside 3 feet 6 inches high and 2 feet 6 inches to 3 feet wide. The wall at 

 that point rises 4 feet to 4 feet 6 inches higher, and is over 10 feet thick in 

 all. The garth is 74 feet long, east and west, and is still 50 feet wide, for 

 about half has fallen away. In the middle were two large huts, the " Tower," 

 16 feet 6 inches, inside, with a wall of earth and stones, 7 feet 6 inches to 



1 The references are to the maps of six inches to the mile. 



2 This unnecessary accuracy is well seen at the walled rocks of Dunaneanir in the Mullet and the 

 Caehlaun Gar, Co. Clare. 



