Slieve Gullion

Slieve Gullion is a mountain and the highest point in County Armagh, Northern Ireland, rising to about 573 metres. It is the central feature of the Ring of Gullion, a notable geological ring dyke and designated Area of Outstanding Natural Beauty.

The summit area contains a Neolithic passage tomb and cairn, and the site offers extensive walking routes and wildlife habitats, attracting hillwalkers and archaeological interest. Managed woodland and trail infrastructure provide access from several car parks and forested slopes.

The mountain was shaped by ancient volcanic and geological processes that produced the ring dyke formation; the passage tomb attests to prehistoric ritual and burial use of the summit.

Slieve Gullion sits in south-eastern County Armagh within the Ring of Gullion landscape, reachable by local roads from nearby towns and forming a distinct upland feature within the surrounding countryside.

• Elevation and geology: The peak is the highest point in County Armagh at 573 metres and is the focal point of the Ring of Gullion geological structure.
• Archaeology: A prehistoric passage tomb crowns the summit and is a primary archaeological feature of interest to visitors and researchers.

What to See #

• Summit passage tomb: The summit contains a Neolithic passage tomb and associated cairn that dates to the prehistoric period and is a visible archaeological feature at the top of the hill.
• Forest Park and trails: Slieve Gullion Forest Park provides managed woodland, car parks and waymarked walking trails that lead to ridge viewpoints and the summit area within the Ring of Gullion landscape.
• Ring of Gullion viewpoint: The mountain is the central feature of the Ring of Gullion, a geological ring dyke structure that defines the surrounding Area of Outstanding Natural Beauty and offers panoramic views across Northern Ireland on clear days.