Gartanoul is a megalithic dual court tomb located in Killykeen Forest Park – well-preserved and well-signposted, it is located in a woodland clearing a short distance from the Gartanoul Trail path.

The northern tomb has a court 4 metres wide and 3 metres deep leading to a 4 metre-long gallery divided into two chambers by a low jamb. The southern tomb is very similar. There is a gap of 12 metres between the galleries, making the whole structure nearly 30 metres long.

Although the roof stones are missing, the tomb is in good condition and cairn materials are scattered around the site.