30 



Proceedings of the Ro;/al Irish Academi/. 



fine typical structure, with a long outer lintel, and two long relie^dng 

 stones over it. It is 5 feet 9 inches high, but a step of the natural rock 

 inside it reduces its heiglit to at most 5 feet 3 inches. The passage rises 

 steeply 18 inches in 5 feet ; the two outer ledges or steps are 14 inches and 

 16 inches high, so the garth inside is nearly 4 feet above the foot of the 

 ledge. The gateway tapers very slightly upward from 3 feet 5 inches to 

 3 feet 4 inches wide ; it is 4 feet deep above, and 9 inches more below, of 

 fairly large stones, some 3 feet 7 inches long, and 1 foot thick. The lintels 

 rise inside like inverted steps, such as we find over stairs in certain late 



Fio. ?• —Dun Acngiisa : The inner gateway, interior and exterior. 



peel towers. There au- int- uivt-r.-^, ilieir depths being — the outer, 15 

 inches (by 14 inches thick, and .5 feet 10 inches long , the ne.xt three 9 inches 

 to 10 inches deep, the inner being 4 feet 6 inches long. They rise 9 inches, 

 6 inches, and 8 inches, the two inner being level, and keep the passage at a 

 fairly even lieight above the slope. The inner ope is 5 feet 9 inches high, 

 and 3 feet 2 inches wide. An unroofed passage, 6 feet 7 inches wide, and 

 9 feet 6 inches deep, runs, as is usual in Irish forts, through the inner sections 

 of the wall. The lower blocks are large ; some are 3 feet 7 inches, 4 feet 

 9 inches, and 5 feet 9 inches long, and 15 inches to 28 inches thick ; but the 

 upper part is rebuilt, having been a ragged, shapeless heap of blocks in 



