The Ring of Gullion is a geological formation located in County Armagh, Northern Ireland. It features a circular arrangement of hills and valleys, formed by volcanic activity millions of years ago. The area is known for its rich biodiversity and stunning landscapes, making it a popular destination for hikers and nature enthusiasts. This region is also steeped in history and mythology, with numerous archaeological sites, including ancient burial mounds and stone structures. The Ring of Gullion is part of the Ring of Gullion Area of Outstanding Natural Beauty, which aims to preserve its unique environment and cultural heritage.