F. R, Cowper Reed — Carries of Comerarjh Mountains. 159 



and comprise those known as Coiimgorra, Crotty's Lough, and 

 Coumshingaun. All these contain lakes, and are situated close 

 together. Thus, Ooumgorra is only 500 yards distant from Crotty's 

 Lough on the northward - facing part of the escarpment ; and 

 Coumshingaun, which looks west, lies only 650 yards south of 

 Crotty's, while the divide separating the head of Coumgorra from 

 Coumshingaun is not much over 700 yards wide. This triangular 

 group of corries affords the most striking features of their class, and 

 therefore merits special attention. 



The corrie nearest the Gap is known as Coumgorra, and contains 

 three lakes at successive levels ; the two lower ones are merely 

 expansions of the stream behind and between heaps of morainic 

 material. This stream, which connects the three lakes, flows from 



2Sop- 



"soso 



zwo 



Verlical section of Coamcjorra 



VerticaL section of C'roCti/'s Lough. 

 Fig. 5. 



Vertical scale : 3,000 feet to 1 inch. 

 Horizontal scale : 1,760 feet to 1 inch. 



the mouth of the corrie in a north-easterly direction as the Eiver 

 Douglas to join the Clodiagh at Eoss Bridge. The corrie itself is of 

 large size, and opens northwards ; it has an irregular shape, and on 

 i Qvestigation is found to be composed of two contiguous and partly 

 confluent amphitheatres, a weathered and semi-detached pinnacle of 

 I'ock marking the point of intersection of the two curved lines of 

 cliffs. The outer amphitheatre forms the westei'n side of this 

 composite corrie and is not deeply cut back, but the cliffs encircling 

 it are higher and more precipitous, rising about 1,000 feet above 

 their talus-strewn base, and more than 2,500 feet above sea-level. 

 The two lower lakes lie in this outer corrie, but not close 

 under its cliffs nor at the same level. Their origin is obvious, 



