Best mountain peaks around Pontnewydd are found in a region characterized by hills and plateaus in South Wales. The area offers diverse terrain, from historical Iron Age hillforts to prominent summits marked by trig points. Visitors can experience extensive views across the Severn Estuary, Bristol Channel, and towards the Brecon Beacons. This landscape provides a range of elevated points for exploration.
Last updated: May 6, 2026
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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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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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Cracking local walk, gain height for amazing views and walk over to twmbarlwm
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A steady climb from the canal at Goytre Wharf to the ridge of Mynydd Garn Clochdy wins spectacular views of the Brecon Bacons Black mountains and the Bristol Channel. The return route weavers woodland and passing a Tavern .The route is over tracks fields lanes. There is one long climb over a mile of level open mountain ridge .You probably wont need a compass but take one just in case
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plenty of free parking in Machen next to the village hall and library
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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 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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For extensive vistas, consider Twmbarlwm Hill and Iron Age hillfort, which provides wonderful views of the Severn Estuary. Mynydd Machen Summit offers glorious views over Newport, Cardiff, and the Severn Estuary. Additionally, the Trig point at Mynydd Twyn-glas summit provides extensive views across its rolling plateau, and the View from Mynydd Garn Clochdy offers spectacular views of the Brecon Beacons, Black Mountains, and the Bristol Channel.
Yes, Twmbarlwm Hill and Iron Age hillfort is a significant historical site. It features a 419-meter (1,375 ft) hill with an Iron Age hillfort on its summit, rich in history and folklore.
There is plenty of free parking available in Machen next to the village hall and library, which is convenient for accessing Mynydd Machen Summit.
The region features diverse terrain, from historical Iron Age hillforts to prominent summits marked by trig points. You'll find rolling plateaus, steep slopes, and some areas cloaked with conifer plantations, such as around Mynydd Twyn-glas and Mynydd y Lan.
When exploring the area around Mynydd Garn Clochdy, some routes weave through woodland and pass a tavern, offering a chance for refreshment after your walk.
Beyond hiking the peaks, the area offers various cycling opportunities. You can find routes for touring bicycles, gravel biking, and mountain biking. Explore options like the 'Cwm Carn Campsite loop from Cwmbran' for cycling, or the 'Pontymoile Basin – Llanelly Quarry Limekilns loop from Pontypool and New Inn' for gravel biking. For mountain biking, consider trails like 'Cafall red trail' or 'Twrch red trail' at Cwmcarn Trail Centre. You can find more details on these activities in the Cycling around Pontnewydd, Gravel biking around Pontnewydd, and MTB Trails around Pontnewydd guides.
Visitors frequently appreciate the extensive views offered from the summits, spanning across the Severn Estuary, Bristol Channel, and towards the Brecon Beacons. The combination of natural beauty and historical significance, particularly at sites like Twmbarlwm Hill, is also highly valued by the komoot community.
While specific crowd levels vary, exploring the less prominent hills like Mynydd y Lan, which is a flat-topped hill with largely wooded flanks, might offer a quieter experience compared to more well-known spots. Early mornings or weekdays are generally good times to avoid larger crowds on any trail.
The region's hills and plateaus can be enjoyed throughout the year. Spring and autumn offer pleasant temperatures and vibrant scenery, while summer provides longer daylight hours. Winter hikes are possible, but be prepared for potentially colder, wetter conditions and shorter days.
Many summits are marked by trig points, such as at Mynydd Machen Summit and the Trig point at Mynydd Twyn-glas summit. Twmbarlwm Hill features a distinct Iron Age hillfort mound. Mynydd y Lan has a wireless transmission station towards its northern end.
Yes, many of the peaks in the Pontnewydd area are categorized as intermediate. This includes popular spots like Twmbarlwm Hill, Mynydd Machen Summit, Trig point at Mynydd Twyn-glas summit, and Mynydd Garn Clochdy, offering rewarding experiences for those with some hiking experience.


See even more amazing summits around Pontnewydd with these guides: