Natural monuments around Castle Island offer a diverse landscape for exploration. This region features a mix of ancient historical sites and significant geological formations. Visitors can discover megalithic structures, stone circles, and scenic waterways. The area provides opportunities to engage with both natural beauty and historical heritage.
Last updated: June 30, 2026
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This impressive stone circle, dating from the late Neolithic to early Bronze Age, consists of over 50 upright stones enclosing a diameter of around 35 metres. Access is via a narrow hedge-lined path that takes you directly to the entrance of the circle
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Visitors to Corrog Wood will be greeted by a curious wooden sculpture of a Dryad. The sculpture has been affectionately named the ‘Frump in the Stump’. A dryad is a tree nymph in Greek mythology. The Dryad keeps a watchful, protective eye on the new wood standing at the entrance. Continue past the Dryad on through the little kissing gate and a loop pathway will be waiting to lead you around the 14-acre wood, where a mix of approximately 12,000 native trees and 400 metres of hedging have been planted.
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One of the best kept Circles I know of. The late Neolithic to earlier Bronze Age monument was excavated in 1937–1939 but its development and date are still not entirely clear. Excavation uncovered a slab feature with three compartments at the west end of the cairn, which could suggest the court tomb tradition, and a single stone cist at the east end which could point to the passage tomb tradition. Cremated remains representing at least seven individuals and some Neolithic pottery were found. Parallels for the outer stone circle with sites in Cumbria have been suggested.
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The Dolmen can be found on the north east shore of Loughinisland Lake, within sight of Loughinisland Church. A slightly displaced capstone covers a rectangular chamber of which three side stones survive. An early account suggests that this was formerly inside a large circular cairn and approached through a lintelled passage, so it may be the remains of a passage tomb. It is famous as the platform from which Thomas Russell addressed a crowd of United Irishmen in 1803, after the main 1798 rising.
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Situated on the shores of Strangford Lough in an area of outstanding natural beauty, The Park offers peace, beauty and tranquillity. It is home to the Strangford Stone - the tallest megalith in Ireland. This beautiful 200 -acre Country Park offers a great day out for visitors of all ages. Whether you are a keen walker, a nature lover or simply looking for a great day.
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Ringhaddy Sound is located on the western shore of Strangford Lough to the west of Islandmore. With its unusual swollen hills it is a real joy to cycle. Descend into the sound, and enjoy the atmosphere. A Castle ruin and Church sit further on the Peninsula, but alas they are on private land. It is possible to arrange access from the land owner however. There is also a Beautiful mooring with a Boat Club that has full facilities if needed. Heres a bit about the Castle. This is one of the most completely surviving tower houses in the county, retaining its gables and formerly an original wooden window. There were at least two main phases of construction at this site. The ground floor, which had a stone vault, dates from the 15th century, while the upper parts were rebuilt in about 1600. It is rectangular in plan with small turrets at the north-east and south-west angles, one with the stair and the other with a latrine chute. There are large fireplaces on the first and second floors, and an attic in the roof. A distinctive stone rainwater spout projects from the east side. The castle seems to have changed hands between Bryan McArt and the English in the early 16th century, and it is likely that the earlier castle was McArt’s stronghold, slighted when he withdrew, and rebuilt by the new English owner. Underwater investigation has confirmed the presence of a stone slipway beside the castle, and water transport was clearly of great importance in this location.
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Situated on the shores of Strangford Lough in an area of outstanding natural beauty, The Park offers peace, beauty and tranquillity. It is home to the Strangford Stone - the tallest megalith in Ireland. This beautiful 200 -acre Country Park offers a great day out for visitors of all ages. Whether you are a keen walker, a nature lover or simply looking for a great day. Steamers Coffee Shop Serves a wide variety of refreshments, including full breakfast and lunch menus, great coffee and ice cream in the summer.
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Just about 100 metres further up the road is a mooring with a Boat Club, with facilities if needed.
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The region around Castle Island offers a diverse range of natural monuments, including impressive megalithic structures like the Strangford Stone, ancient stone circles such as Ballynoe Stone Circle, and scenic waterways like Ringhaddy Sound. You'll find a mix of natural beauty and historical heritage.
Yes, several natural monuments are suitable for families. The Strangford Stone, located within Delamont Country Park, is a great option, offering peace and beauty on the shores of Strangford Lough. Ballynoe Stone Circle and Annadorn Dolmen are also categorized as family-friendly.
The area is rich in historical natural monuments. The Ballynoe Stone Circle is an impressive site dating from the late Neolithic to early Bronze Age, featuring over 50 upright stones. The Annadorn Dolmen, a passage tomb remnant, also offers a glimpse into ancient history.
Absolutely! The region offers various walking and hiking opportunities. You can find easy hikes like the Castle Ward Farm Trail or the Delamont Long Walk. For more options, explore the Easy hikes around Castle Island guide.
Yes, there are several running trails. Delamont Country Park offers a running loop, and you can also find routes along the Quoile River. Check out the Running Trails around Castle Island guide for detailed routes.
Cyclists can enjoy a variety of routes, from the Delamont to Ardglass Harbour loop to longer rides like the Saint John's Point loop. For a comprehensive list of options, refer to the Cycling around Castle Island guide.
The Strangford Stone is a man-made monument and natural monument situated on the shores of Strangford Lough within Delamont Country Park. It is notable as the tallest megalith in Ireland, standing at 12.5 meters, and offers superb views over the lough and towards the Mountains of Mourne.
Ballynoe Stone Circle is an impressive historical site and natural monument, dating from the late Neolithic to early Bronze Age. It consists of over 50 upright stones enclosing a diameter of around 35 meters, offering a unique glimpse into ancient ceremonial practices.
Some natural monuments and trails are dog-friendly. For instance, Ballynoe Stone Circle and Annadorn Dolmen are noted as dog-friendly. Always check specific site regulations before visiting with your dog.
Ringhaddy Sound, located on the western shore of Strangford Lough, is characterized by its unusual swollen hills. It offers scenic views and the atmosphere of a river landscape, with a castle ruin nearby adding to its historical charm.
The Annadorn Dolmen is a historical and archaeological natural monument found on the north-east shore of Loughinisland Lake. It features a slightly displaced capstone covering a rectangular chamber, believed to be the remains of a passage tomb.
Visitors appreciate the blend of natural beauty and rich history. The tranquility of places like Delamont Country Park, the impressive scale of the Strangford Stone, and the ancient mystery of sites like Ballynoe Stone Circle are frequently highlighted. The scenic views over Strangford Lough are also a major draw.


Extend your search for the best caves by checking out these guides of the top ones around Castle Island: