Natural monuments around Llanddona, a village on the Isle of Anglesey, feature diverse geological formations, coastal landscapes, and historical sites. The area provides insight into the region's natural history and offers varied environments for exploration. Notable landmarks include prominent hills, expansive bays, and ancient structures. These sites contribute to the understanding of local biodiversity and past human activity.
Last updated: July 1, 2026
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On the longest day of the year, sunlight flows into the passageway of this Neolithic burial grounds. Bryn Celli Ddu Burial Chamber is one of Anglesey’s most famous prehistoric landmarks, Bryn Celli Ddu (the ‘Mound in the Dark Grove’ in English) is actually two sites in one. In the early Neolithic (New Stone Age) period, a henge (bank and ditch) enclosing a circle of stones was built here, to be replaced later by a chambered tomb beneath a mound measuring up to 85ft/26m in diameter. Inside, a long, narrow passage leads to an octagonal chamber 8 feet/2.4m across, where artefacts such as human bones, arrowheads, and carved stones have been found.
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Large sandy bay surrounded by dunes. On the north side there are large, striking limestone cliffs of Castell Mawr - certainly geologically interesting, looks like climbers could have fun here... The beach itself is a really large (!) sandy bay, very popular in summer but largely deserted out of season. You can sometimes see kitesurfers and windsurfers here. There is parking behind the dunes and there is a small beach café and shop.
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A small but tough and technical climb, beware of sharp rocks on the left hand side when descending
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An amazing view can be enjoyed from Church Island, amongst others of the Menai Bridge and the Pont Britannia (see panoramic photo)
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This huge, abrupt limestone rock is an extraordinary feature on Anglesey's north eastern coast. With sheer sides and a top covered in vegetation, it's thought to have once been the site of an Iron Age hillfort. Today, you can walk around its base and listen to the cries of the birds that nest in its crevices.
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Mynydd Bodafon is a small collection of peaks including the Arwydd which is the highest point on the island of Anglesey. It lies about 2½ miles west of the coastal town of Moelfre and ⅔ of a mile south-west of the hamlet of Brynrefail. The meaning of Bodafon is obscure. It is a UK listed Marilyn.
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Remember that scene in Raiders of the Lost Ark where Indiana Jones directs a beam of light through a chamber to show the location of the ark? This is where that happens for real. This prehistoric burial chamber was also used to chart the turn of the seasons, and around the time of the summer solstice (longest day), sunlight is funnelled through the front door into a single beam, illuminating the mysterious standing stone at the heart of the chamber.
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Bryn Celli Ddu (‘Mound in the Dark’) is one of Anglesey’s most famous prehistoric landmarks. The great thing is, you can actually walk inside and through this neolithic burial chamber. However, to see Bryn Celli Ddu’s most striking feature, you have to be there on the summer solstice. As the sun rises, light shines directly down the tomb’s passageway to illuminate the chamber within.
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Llanddona offers a variety of unique natural features. You can explore the expansive sandy stretch of Red Wharf Bay, known for its diverse birdlife and geological formations. The area also features Bwrdd Arthur, a prominent limestone hill with rare flora, and Llanddona Common Nature Reserve, a Site of Special Scientific Interest (SSSI) with heathland ecosystems.
Llanddona is rich in historical natural monuments. You can visit the Bryn Celli Ddu burial chamber, a Neolithic site where sunlight illuminates the chamber during the summer solstice. Another significant site is the Llanddona Standing Stone, a well-preserved Bronze Age monument. Additionally, Bwrdd Arthur and Castell Mawr Rock both host remains of Iron Age hillforts.
Yes, Red Wharf Bay is an excellent location for birdwatching. As a nature reserve, its expansive sands, mud, shingle, and boulders, especially at low tide, attract a variety of birds. You might spot curlew, oystercatcher, redshank, plover, sandpipers, dunlin, and brent geese during winter months.
For panoramic views, consider hiking to the summit of Bwrdd Arthur, which offers magnificent vistas. Mynydd Bodafon Summit is another excellent viewpoint, being the highest point on Anglesey. Additionally, Church Island and St. Tysilio's Church provide amazing views, including the Menai Bridge and Pont Britannia.
Yes, several natural monuments are suitable for families. Red Wharf Bay is ideal for beachcombing and walks, offering plenty of space. The Bryn Celli Ddu burial chamber is also considered family-friendly, allowing visitors to walk inside and explore a piece of ancient history.
The area around Llanddona offers various outdoor activities. You can find numerous road cycling routes, such as the 'Menai Suspension Bridge – View of the Menai Strait loop from Llanddona'. There are also touring bicycle routes like the 'Penmon Point & Red Wharf Bay loop from Beaumaris Castle'. For runners, trails like the 'View of Red Wharf Bay – Red Wharf Bay loop from Red Wharf Bay' are available. You can explore more options in the Road Cycling Routes around Llanddona, Cycling around Llanddona, and Running Trails around Llanddona guides.
The best time to visit Llanddona's natural monuments largely depends on your preferred activities. For enjoying the beaches and coastal walks, summer offers pleasant weather. Birdwatching at Red Wharf Bay is particularly rewarding during winter months when migratory birds are present. For historical sites like Bryn Celli Ddu, the summer solstice is a unique time to witness the chamber's illumination.
Yes, there are circular walks available that allow you to explore the natural beauty of the area. For specific routes and details, you can refer to resources like the Anglesey Coastal Path, which passes through areas like Llanddona Beach. For more information on local walks, you might find the Llanddona Circular Walk helpful.
Llanddona is geologically significant. The cliffs and foreshore of Red Wharf Bay reveal Carboniferous limestones, sandstones, and shales, indicating ancient sea-level changes. Bwrdd Arthur is a prominent limestone hill. The area also provides evidence for Holocene sea-level history, with locally cemented deposits that offer insights into how the island's landscape has been shaped over millennia.
Many of Llanddona's outdoor natural monuments, particularly beaches and walking trails, are generally dog-friendly. Llanddona Beach and the wider Red Wharf Bay area are popular for dog walks. However, it's always advisable to keep dogs on a lead, especially in nature reserves like Llanddona Common SSSI, to protect wildlife, and to check for any specific local restrictions.
Parking is available at several key locations. For Red Wharf Bay and Llanddona Beach, there is parking conveniently located behind the dunes. For other natural monuments and trailheads, parking availability can vary, so it's recommended to check specific access points before your visit.


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