http://www.themodernantiquarian.com/site/2529/beltany.html
Am tentatively hoping to visit Donegal next year, all being well. Rather intrigued by this stone circle which to all intents and purposes seems to date to the Iron Age rather than the Neolithic.
http://thinplacestour.com/2013/06/18/beltany-stone-circle-thin-place-in-co-donegal/
Is this uncommon or something specific to the north of Ireland?