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United Kingdom
Wales
South Wales

Risca East

Top 7 Natural Monuments around Risca East

Best natural monuments around Risca East are found within the Caerphilly County Borough in South Wales, characterized by extensively wooded hills and prominent natural features. The area offers a variety of natural attractions, including significant hills and a reservoir, providing opportunities for outdoor exploration. These locations are valued for their scenic beauty and historical significance. The landscape supports activities such as hiking and mountain biking.

Best natural monuments around Risca East

  • The most popular natural monuments is Twmbarlwm Hill and Iron Age hillfort, a historical site that is a 1,375 foot (419 m) hill rich in beauty, history, and folklore. From its summit, visitors can enjoy extensive views of the Severn Estuary and explore an Iron Age hill fort.
  • Another must-see spot is Mynydd Machen Summit, a viewpoint offering glorious views over Newport, Cardiff, and the Severn Estuary. The summit, marked by a trig point, is a popular spot for hillwalking.
  • Visitors also love Llandegfedd Reservoir, a natural monument featuring a large lake and various walking trails. It provides beautiful views and is designated an SSSI for its overwintering wildfowl.
  • Risca East is known for its hills, summits, and reservoirs. These features offer diverse opportunities for outdoor activities like hiking and appreciating local wildlife.
  • The natural monuments around Risca East are appreciated by the komoot community, with more than 50 upvotes and over 20 photos shared.

Last updated: May 3, 2026

Twmbarlwm Hill and Iron Age hillfort

Highlight • Historical Site

Twmbarlwm is a 1,375 foot (419 m) hill that is rich in beauty, history and folklore. From the summit, you are afforded wonderful views of the Severn Estuary. There is an Iron Age hill fort on the summit, too.

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Mynydd Machen Summit

Highlight • Viewpoint

Mynydd Machen is a 1,188-foot (362 m) hill in South Wales which affords glorious views over Newport, Cardiff, Steep Holm, Flat Holm, Brean Down, and the Severn Estuary. The summit is marked by the rock 10 feet (3 m) northwest of the trig point.

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Llandegfedd Reservoir

Highlight • Natural Monument

A lovely place with great views, with a variety of walking trails on offer.

Please note that the majority of the trails are closed annually from 1st October to 1st March, this is to protect over-wintering wildfowl, for which the area has been designated an SSSI.

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Trig point at Mynydd Twyn-glas summit

Highlight • Natural Monument

Mynydd Twyn-glas is a sprawling 472-metre-high mountain extending into Caerphilly and Torfaen county boroughs in South Wales. It lies southwest of Pontypool, west of Cwmbran and east of Newbridge and taking the form of a rolling plateau the margins of which are defined by steep slopes, many of which are cloaked with conifer plantations. A broad shoulder extending south from the summit is known as Mynydd Maen whilst to the north is Mynydd Llwyd. The thickly afforested northern slopes of the hill drop down steeply into Cwm y Glyn. It is a UK listed Marilyn.

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Wern Ddu Clay Pit Nature Reserve

Highlight • Historical Site

Wern Ddu is an SSSI, the quarry workings being around 150 years old and leaving exposed geology that is a little bit older (estimated 300 million years previous).

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Tips from the Community

Peter Turner
July 9, 2025, Mynydd Machen Summit

Nice ascent from Crosskeys, but watch out for very overgrown pathways on the Machen side. Great views from the top!

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Twmbarlwm is a prominent hill and archaeological site located near the town of Cwmcarn in South Wales. It is part of the Caerphilly County Borough and is known for both its natural beauty and historical significance. Here are some key points about Twmbarlwm: Key Features: Hillfort: Twmbarlwm is home to the remains of an ancient hillfort, dating back to the Iron Age. The fortifications, which include earthworks and ramparts, suggest it was a significant settlement during that period. Celtic Connections: The name "Twmbarlwm" is thought to derive from Welsh, with "Twm" being a diminutive of "Tudur" and "barlwm" referring to a mound or hill. The site is associated with Celtic history and mythology. Natural Beauty: The hill offers stunning views of the surrounding landscape, including the nearby valleys and mountains. It is a popular destination for walkers, hikers, and outdoor enthusiasts. Archaeological Significance: Twmbarlwm has been the subject of various archaeological studies, which have revealed insights into ancient settlement patterns, defensive strategies, and daily life in prehistoric Wales. Access: The hill is accessible via footpaths, making it a popular spot for local residents and visitors. There are several trails that lead to the summit, offering a rewarding hike. Cultural Heritage: The site is connected to local folklore and legends, contributing to its cultural significance in the region. Visiting: If you plan to visit Twmbarlwm, it’s a good idea to check local resources or hiking guides for specific trails and information about the area. The site is a great way to experience the natural beauty and historical richness of South Wales.

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Be aware that if you come down to the dam on the lake you can't escape through the valley, there's a gate on both of these minor roads coming down off the dam with some very threatening signs. You have to take on one of the bastard ramps, east or west doesn't matter, they're both brutal, though I can imagine eastward is worse.

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A small summit above Risca. Known locally as the "Twmp" (the hump), the pimple or the nipple, due to the shape of the mound on the summit.

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Adie
January 12, 2023, Llandegfedd Reservoir

A lovely place with great views, with a variety of walking trails on offer. Please note that the majority of the trails are closed annually from 1st October to 1st March, this is to protect over-wintering wildfowl, for which the area has been designated an SSSI.

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Wern Ddu is an SSSI, the quarry workings being around 150 years old and leaving exposed geology that is a little bit older (estimated 300 million years previous).

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lovely nature reserve

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Cracking local walk, gain height for amazing views and walk over to twmbarlwm

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Frequently Asked Questions

What types of natural features can I explore around Risca East?

The area around Risca East is characterized by extensively wooded hills and significant natural features. You can explore prominent summits like Twmbarlwm Hill and Iron Age hillfort and Mynydd Machen Summit, which offer expansive views. There's also Llandegfedd Reservoir, a large lake with walking trails, and the historical Wern Ddu Clay Pit Nature Reserve.

Are there any natural monuments with historical significance in Risca East?

Yes, several natural monuments in the area boast historical significance. Twmbarlwm Hill and Iron Age hillfort is a prime example, featuring the remains of an Iron Age hillfort believed to have been constructed by the Silures. Additionally, Wern Ddu Clay Pit Nature Reserve is an SSSI with quarry workings around 150 years old, exposing geology estimated to be 300 million years old.

What outdoor activities can I do near the natural monuments in Risca East?

The natural monuments around Risca East offer diverse opportunities for outdoor activities. You can enjoy hillwalking and mountain biking on summits like Twmbarlwm Hill and Mynydd Machen Summit. For waterside activities and appreciating local flora and fauna, the Monmouthshire and Brecon Canal passes through Risca. There are also various routes for gravel biking, MTB, and running; you can find more details in the Gravel biking around Risca East, MTB Trails around Risca East, and Running Trails around Risca East guides.

Are there family-friendly natural monuments or activities in Risca East?

Yes, Llandegfedd Reservoir is a family-friendly natural monument offering a large lake and various walking trails. Its beautiful views and designation as an SSSI for overwintering wildfowl make it an engaging spot for all ages. The Monmouthshire and Brecon Canal also provides opportunities for easy waterside walks suitable for families.

Where can I find the best viewpoints of the region?

For glorious views, head to Mynydd Machen Summit, which offers panoramas over Newport, Cardiff, and the Severn Estuary. Twmbarlwm Hill also provides extensive views of the Severn Estuary from its summit. Additionally, the Trig point at Mynydd Twyn-glas summit is another excellent spot for amazing views.

Are there dog-friendly trails around the natural monuments?

Many of the natural areas and trails around Risca East are suitable for dog walking, especially the extensive wooded hills and the Monmouthshire and Brecon Canal paths. When visiting specific sites like Llandegfedd Reservoir, it's advisable to check local signage for any restrictions, especially concerning wildlife protection areas.

What is the best time to visit the natural monuments in Risca East?

The natural monuments in Risca East can be enjoyed year-round. Spring and summer offer lush greenery and warmer weather for hiking and outdoor activities. Autumn brings beautiful foliage to the wooded hills. However, note that some trails at Llandegfedd Reservoir are closed annually from October 1st to March 1st to protect overwintering wildfowl.

Is there parking available for these natural monuments?

Yes, parking is generally available. For Mynydd Machen Summit, there is plenty of free parking in Machen next to the village hall and library. For other locations like Twmbarlwm Hill and Llandegfedd Reservoir, designated parking areas are typically provided, though it's always good to check specific access points before your visit.

Can I reach these natural monuments using public transport?

Risca East is served by local bus routes, and the town of Risca itself has a train station. While some natural monuments like the Monmouthshire and Brecon Canal are easily accessible from the town center, reaching more remote hill summits such as Twmbarlwm Hill or Mynydd Machen Summit might require a combination of public transport and walking, or a short taxi ride from the nearest stop.

What kind of wildlife can I expect to see?

The natural areas around Risca East, particularly the wooded hills and the Llandegfedd Reservoir, are rich in wildlife. The reservoir is designated an SSSI for its overwintering wildfowl, making it an excellent spot for birdwatching. The extensive woodlands and natural reserves also support various local flora and fauna, offering opportunities to appreciate nature.

Are there any easy walking trails suitable for beginners?

Yes, while some trails lead to challenging summits, there are easier options. The paths around Llandegfedd Reservoir offer a variety of walking trails, some of which are gentle and suitable for beginners. The Monmouthshire and Brecon Canal also provides flat, waterside walks that are generally easy and accessible.

What should I wear when visiting the natural monuments?

Given the varied terrain, including hills and walking trails, it's recommended to wear comfortable walking shoes or trainers. For visits to summits like Twmbarlwm Hill or Mynydd Machen Summit, layers of clothing are advisable as weather conditions can change, and it can be windier at higher elevations. Waterproofs are always a good idea in South Wales.

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