Kinahan— Ancient Sea Margins. 



339 



The highest of these escarpments is near the summit of the three 

 most western hills (Doughbraneen, 1,041 feet, Knockaghaghnna, 

 1,044 feet, and Cappanawalla, 1,028 feet), and is foimd to be at an 

 altitude of about 975 feet. On Doughbraneen, the most western 

 summit, its height on the Ordnance Map is 975 feet, and on Knock- 

 aghaglinna 985 feet ; on Cappanawalla, the height nearest to the 

 escarpment, which is south-east of the summit, is 968 feet. In 

 places there is a steep rocky talus from this set of terraces. 



The next conspicuous escarpment is about 650 feet in altitude. 

 It forms the north-west shoulder of Doughbraneen, called Caher- 

 doonfergus (647 feet), and also the cliff on the north face of Carn- 

 seefin (726 feet), the name by which the north shoulder of 

 Doughbraneen is known. On the north of Carnseefin there is a 

 steep rocky slope extending down from the lowest terrace. 



Doughbraneen. Caherdoonfergus. 

 Cappanawalla. Knockaghaglinna. Carnseefin. 



1028 1044 1041 726 647 



Fi(j. 3. — Black Heax> and adjoining Hills, as seen from Taylor's Hill, on 

 THE North Side of Galway Bay, looking South-west. 



This escarpment is well marked, for on a clear day it is most con- 

 spicuous from the north shore of the Bay, and can be traced for 

 miles along the sides of the hills. If we begin towards the west at 

 Black Head, and extend the survey to the east, it will be observed 

 along the north face of the above-mentioned hills, and winding 

 round Cappanawalla into, round, and out of the valley in which Bally- 

 vaughan is situated ; from thence round Slieve-na-gapple uito the 

 glen at the head of Muckinish Bay, out of which it passes ; it is next 

 traceable along tov/ards the east, until it finally disappears behind 

 the hills that lie south-west of Kinvarra. 



The thu'd conspicuous escarpment is at about the height of 300 

 feet. It is well seen along the face of the hills from Black Head by 

 Gleninagh to Harbourhill House, to the south of which, on the east 

 slope of Cappanawalla, it disappears, as a steep rocky slope strewed 

 with debris of the subjacent rocks, and extends down from the 650 

 feet escarpment to a level of about 150 feet. Farther east it can be 

 again observed, and towards the west. On the 8.S.W. of Black Head, 

 it merges into a steep cliff, the Ordnance height of which, a mile 



