Brandon Hill has various classifications (§ DoBIH codes). Brandon Hill (Gribbon No. 071) is known as the county high point but are also sometimes referred to as county top and county peak.[2][3][4] It is listed as one of the 200 Myrddyn Deweys, which are the Irish equivalent of Deweys. It is listed as one of the 407 Arderins, which are the Irish equivalent of the Hewitt.
Brandon Hill has a regional height rank of 151 of 454 Marilyns in Ireland (389 in the Republic of Ireland and 66 in Northern Ireland), and a regional prominence of 53. With a height rank of 1098 and prominence rank of 269 of the total for the British Isles of 2,011.[5]
It is the termination of the chain of granitic mountains that raise from the shores of Dublin bay.[8] The base of Brandon Hill on the side of the River Barrow and the hill running to Graigue is composed of schist rock.[9] This blackish siliceous schistus, sometimes containing grains of quartz and when it is broken it has a shivery texture and is hard enough to scratch glass.[10]
There are a few beds of marble and limestone gravel near the foot of the mountain.[11]
Archaeology
Evidence regarding the early settlement of the Brandon Hill uplands came to light as a result of ground and aerial surveys directed by Michael Gibbons, an archaeologist with the Board of Works, in 1989. The survey indicated that the slopes of Brandon were settled in excess of four thousand years ago and that the cairns, house sites, field systems and a large ritual enclosure identified on its slopes are part of the prehistoric remains there. Two Norman moated sites, with long rectangular buildings attached - probably granges or farms attached to Duiske Abbey and thought to be about 600 years old - were also identified on the lower slopes in the Ballyogan townland area during the survey.
