A number of events are taking place in Roscommon on this Friday and Saturday to celebrate the Táin March Festival and the Cattle Raid of Cooley.
The Táin March was established in 2011 as a community walking festival to celebrate and promote the epic tale.
The story is reputed to have taken place about the time of Christ and involved the armies of Connacht and Ulster in a titanic struggle over a prize bull called Donn Cúailnge.
A number of people have walked from Rathcroghan to Cooley over the years to re-enact the story and a youth theatre group from Dundalk will perform on the Market Square in Roscommon town on Saturday afternoon before moving on for a similar event at the Rathcroghan Mound car park in the evening.
The event also includes the telling of the story in Rathcroghan on Friday evening.
Local guide Mike McCarthy says it's an epic tale in Irish mythology.
"It's like the Iliad and the Odyssey rolled up into one. It's got the lot. It's set 2000 years ago in the Iron Age and what's lovely for us here is that it not only begins here but it ends here as well. It begins here with a very famous chapter called 'The Pillow Talk of Queen Maeve' who was Queen of Connaught. It ends here with the battle of the two bulls, the Donn Cúailnge and the White Bull of Connaught. This is our most famous story. If people want to come down here to Rathcroghan Visitor at 7:30 on Friday evening, it's a free event, we'll rejig their memory on all those tales".
