The 'Long Womans Grave' could be this suspicious looking place in Co. Louth, http://www.omeath.net/long_womans_grave.htm I'm not sure what it could be but it looks a very odd place for a court tomb gallery. I found it a few months ago while looking for info on that odd looking dolmen in the Cooley Mountains.
Program sounds good, hope it lives up to it better than Secret Sights.