Maps of the cairns at Sliabh na Caillighe, Loughcrew
I've created maps of the cairns at Sliabh na Caillighe/Loughcrew, using Bing Maps. The cairns are believed to be older than Newgrange, dating possibly to 3500BC, and were given letter designations by Eugene Conwell, who excavated some of them in the 1860s. The hill known as Carnbane West today was, according to local folklore, known previously simply as Carnbane (from carn bán, the "white cairn"). The hill labelled Carnbane East today was known in the past as Sliabh na Caillighe, the Mountain of the Hag.
The best known of the cairns are Cairn T, called the Hag's Cairn, which is aligned towards sunrise on the equinoxes, and Cairn L on Carnbane, which is aligned towards sunrise at Samhain (November) and Imbolc (February).
Don't forget to watch the video below, in which I give a quick overview of the hills of Loughcrew using Google Earth. This will give you a sense of where the various cairns are located and which are considered the principal peaks. It will also give you a good idea of the location of the cairns in relation to the Brú na Bóinne complex (Newgrange, Knowth and Dowth):