Best natural monuments around Old Colwyn include a blend of geological formations, ancient woodlands, and coastal features. The region offers diverse natural landscapes, from prominent limestone hills with panoramic views to tranquil river valleys and a coastline notable for its glacial erratics. These sites provide opportunities for outdoor recreation and observing local natural history.
Last updated: July 1, 2026
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Site of Special Scientific Interest (SSSI): Coed y Gopa is designated as an SSSI due to its exceptional biological interest. Bats: It's particularly renowned for being home to the second largest lesser horseshoe bat hibernaculum in North East Wales. These bats utilize the numerous old mine workings (adits) and natural caves within the site for winter hibernation. Other bat species like Natterer's bat and Daubenton's bat are also found here. The wide rides and varied habitats within the wood provide excellent feeding areas for bats. Other Wildlife: Beyond bats, the woodland supports a rich array of wildlife, including various bird species like ospreys, goshawks, pied flycatchers, redstarts, and wood warblers.
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The batcaves, Coed y Gopa, meaning "wood of the summit" in Welsh, is a prominent and ecologically important woodland located on a limestone hillside in the Vale of Clwyd, North Wales, near the town of Abergele. It's a popular site for visitors due to its diverse wildlife, historical features, and breathtaking coastal views.
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In the second period a smaller and stronger fort was constructed at the west end of the hill. The older fort appears to have still been occupied but there was no access between the two. The smaller fort had somewhat wider walls and a strong gateway protected by bastions on either side and probably a ‘fighting tower’. Comparison with similar forts suggests that the wall would have been about 3 to 4m high with a walkway and breastwork wall on top. The defences were further reinforced by the addition of deep ditches at the east, north-east, west and south-west (E). The entrance was also protected by an ‘outwork’ – an outer wall that made rapid, approach to the entrance impossible and exposed any attackers to missiles from the defenders on the overlooking inner walls. The entrance through this outwork was later blocked. The excavations carried out in 1951 found a hearth inside one house in the small fort as well as spindle whorls (for spinning wool) and a quern (for grinding corn). In the large fort the house next to the entrance contained over 400 sling stones, so perhaps was a ‘guard chamber’. It may be that the small fort was built during the period between the first Roman attack on north Wales in 60AD and the final conquest in 78 AD. The absence of Roman period finds from the fort suggested that it was not occupied after the Roman conquest, and so it may have been destroyed and deserted. However, there is a tradition linking the fort with Maelgwn Gwynedd in the 6th century and it has been suggested that the small fort belongs to that period. Outside the fort are some remains of stone-walled roundhouses that may have been occupied at the same time as the fort or during the Roman period. One lies in a slight level hollow at the north side of the North Wales Path just east of the path up to the fort. It consists of one large roundhouse and probably several other smaller buildings. The other lies on a terrace on the slope below the south-east angle of the fort and consists of just a single large roundhouse.
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Caer Seion is a large and strong hill fort. Excavations were carried out in 1951 but did not produce any dating evidence. However, it is believed to have been occupied during the Middle to Late Iron Age, about 300 BC to 1st century AD and it seemed likely that the fort was abandoned when the Romans conquered North Wales in 78 AD. The fort had a commanding position overlooking Conwy Bay and estuary and over the ancient trackway that followed the coastal ridge, continuing westwards towards Anglesey. The next nearest strong forts and possibly tribal centres are at Pen-y-dinas on the Great Orme, Pen-y-gaer above Llanbedrycennin and Braich y Dinas above Penmaenmawr. The fort had two periods of defence. In the first period a single stone wall of 3 to 4m width encircled the whole hill top apart from at the steep north side where no defence was needed. It had one entrance, at the south side, which would have had a timber gate. The greater width of the wall around the gate suggests it had a ‘fighting tower’ over it. Within the fort were over 50 timber round houses, many just behind the rampart at the south side (to shelter from the wind) and they are visible as circular platforms terraced into the hill slope. They varied in size from about 4m to 8m diameter and traces of walling survive at some of them. In one place there is a possible corn-drying kiln.
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Trig point on top of the little orme. Gives panoramic views of the Irish sea, Snowdonia, Conwy, Denbighshire, Llandudno and the Great Orme.
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The Little Orme (Welsh: Rhiwledyn, also known as Trwyn y Fuwch, Trwyn y Gogarth and Y Gogarth Fach) is 141 metres (463 ft) in height, and is a HuMP (having a minimum Hundred Metre Prominence). It is one of two headlands situated at either end of Llandudno Bay, in Conwy County Borough, Wales. The other, larger, headland is the Great Orme. It has two summits, the higher with a trig point. The cliffs are a popular challenge for highly experienced rock climbers. The Coast Guard Rescue Unit use the Little Orme for training. Otherwise, it is a popular sightseeing location and walking/hiking site. The Little Orme was inhabited during the Mesolithic and Neolithic eras, notably the Pant y Wennol cave. A small hoard of Iron Age Celtic metalwork was found in a cave on the Little Orme. The medieval chapel of Blessed Mary of Penrhyn, abandoned in 1930 and now in ruins, is at the foot of the Little Orme in the grounds of Penrhyn Hall at Penrhyn Bay. On 14 April 1587, printing material for Catholic literature was found in a cave on the Little Orme, where it had been used by the recusant Robert Pugh (squire of Penrhyn Hall) and his Chaplain Father William Davies to print Y Drych Cristianogawl (The Christian Mirror), the first book to be printed in Wales. They had taken refuge there during the persecution of Catholics instigated by Queen Elizabeth I in May 1586. The Royal Artillery coastal gunnery school, 198 battery, was posted to Little Orme during the Second World War. Target practice was undertaken from the headland to anchored boats, and unspent ammunition and unexploded shells may still be encountered offshore. Gun emplacements and ancillary buildings were in situ until at least the early 1960s, but the site has since been 'landscaped'.
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Trwyn Y Fuwch has a very large rock formation of hills, these stick out considerably as you ride along the flat promenade. When you get close to then you realise the size
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So much to discover on this little gem of a place.
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The area around Old Colwyn features several highly regarded natural monuments. Among the most popular are Caer Seion Hillfort (Conwy Mountain), known for its historical significance as an Iron Age hillfort and views over the sea. Another favorite is the Little Orme Summit and Trig Point, offering extensive views across the bay and a chance to spot seals on its sheltered beaches. Additionally, Bryn Euryn Nature Reserve, a prominent limestone hill, provides panoramic vistas encompassing Snowdonia and the Welsh coastlines.
Yes, several natural monuments are great for families. Fairy Glen (Ffos Noddun) is particularly engaging, known for its whimsical, community-created displays and charming riverside walk. Old Colwyn Beach, with its mix of shingle and sand, offers a traditional, less commercialized seaside experience, perfect for a relaxed family outing. Bryn Euryn Nature Reserve also has a network of paths suitable for various ages, offering both exploration and stunning views.
Old Colwyn's natural monuments are rich in both history and geology. Caer Seion Hillfort is a significant Iron Age site with remains of over 50 timber round houses. Bryn Euryn Nature Reserve hosts the remains of a 15th-century house and a 6th-century hilltop fort. Geologically, Old Colwyn Beach is notable for its glacial erratics and fossils of ancient marine organisms. The Caer Seion Hillfort (Conwy Mountain) itself is the remains of an ancient volcano.
The area offers a variety of outdoor activities. You can enjoy hiking on the numerous trails, including those at Bryn Euryn Nature Reserve and the riverside walk in Fairy Glen. The wide promenade along Old Colwyn Beach is part of National Cycle Route 5, ideal for walking or cycling. For more structured routes, you can explore options like the 'Colwyn Bay Pier – Conwy Beach loop' for hiking or the 'NCN Route 5: North Wales Coast – Rhyl Harbour and Pont y Ddraig loop' for cycling. Find more routes in the hiking guide, running guide, and cycling guide for Old Colwyn.
Many of the natural monuments in the Old Colwyn area are dog-friendly, provided dogs are kept under control, especially around wildlife or livestock. Fairy Glen offers a pleasant riverside walk, and the promenade along Old Colwyn Beach is great for strolls with your dog. Bryn Euryn Nature Reserve also welcomes dogs on its extensive path network. Always check local signage for specific restrictions, especially concerning nature reserves or protected areas.
For breathtaking views, head to the summit of Bryn Euryn Nature Reserve, which offers panoramic vistas of Penrhyn Bay, Colwyn Bay, Snowdonia, and the distant Clwydian Range. The Little Orme Summit and Trig Point also provides extensive views across the bay and is a fantastic spot for photography. Additionally, Caer Seion Hillfort (Conwy Mountain) offers a commanding position overlooking Conwy Bay.
Public transport options vary by location. Fairy Glen is located within Old Colwyn and is part of the North Wales Coastal Path, making it accessible. Old Colwyn Beach is also easily reachable within the town. For Bryn Euryn Nature Reserve, it's advisable to check local bus routes connecting to Rhos-on-Sea, which is adjacent to Old Colwyn. Planning your journey in advance with local transport services is recommended.
Parking is generally available near the main access points for these natural monuments. For Fairy Glen, local street parking in Old Colwyn might be an option, or designated car parks for the North Wales Coastal Path. Bryn Euryn Nature Reserve typically has parking facilities at its base or nearby access points in Rhos-on-Sea. Old Colwyn Beach has promenade parking available. Always look for official car parks and adhere to local parking regulations.
The natural monuments around Old Colwyn are home to diverse wildlife. Fairy Glen, an ancient woodland, supports various fern species and woodland birds. Bryn Euryn Nature Reserve, with its grassland and woodland, is a Site of Special Scientific Interest, indicating rich biodiversity. Along Old Colwyn Beach, you might spot seabirds, and occasionally seals or dolphins in the waters. The Little Orme is also known for its sheltered beaches, which are a haven for seals.
Beyond the more prominent sites, Pwllycrochan Woods, situated on the steep slopes above central Colwyn Bay, is a designated Local Nature Reserve. This ancient deciduous woodland offers a valuable ecological habitat and peaceful pathways for informal recreation, making it a lovely spot for those seeking a quieter natural experience. Fairy Glen, while popular, still retains a magical, secluded feel with its unique community art installations.
The natural monuments around Old Colwyn can be enjoyed year-round, but each season offers a different experience. Spring brings blooming wildflowers and fresh greenery, especially in woodlands like Fairy Glen and Pwllycrochan Woods. Summer is ideal for coastal walks along Old Colwyn Beach and enjoying the panoramic views from Bryn Euryn. Autumn showcases beautiful foliage, while winter, though cooler, can offer crisp, clear views and a tranquil atmosphere, particularly from elevated points like the Little Orme Summit.


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