Best natural monuments around Mountain Ash East are found within a landscape characterized by valleys, hills, and woodlands in Rhondda Cynon Taf, Wales. This area offers a variety of natural features, including dramatic viewpoints, ancient geological formations, and diverse ecosystems. Visitors can explore sites that showcase the region's natural beauty and historical significance. The natural monuments here provide opportunities to experience the local terrain and scenic vistas.
Last updated: July 1, 2026
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Ancient broadleaved woodlands, calcareous grasslands, river, and cliffs. Part of the Cwm Taff Fechan Woodlands SSSI, and a Local Nature Reserve. Taf Fechan LNR comprises about 2.5 km of river with steep valley sides of Carboniferous limestone. The river has eroded the limestone into a narrow gorge in the centre of the site. A mosaic of deciduous woodland on the slopes with a canopy of Beech, Birch and Ash, gives way to Alder and Grey Willow closer to the river, together with Hawthorn scrub, calcareous grassland, heathland, wet flushes, and tufa formations. The valley is one of the best recorded sites for bryophytes in Glamorgan. Please note that the river next to the Gurnos quarry may contain unseen hazards and as a result the Trust does not consider the site suitable for wild swimming or play.
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High above the A470 to the north of Quaker’s Yard, the Giant’s Bite is a dramatic gap in the skyline quarried from the ridge top at the former Cefn Glas mine and quarry. ❤️👌 The site was intensively grazed up to the mid-1990s when a large belt of native trees were planted on the lower slopes. These trees are now maturing and have helped to heal the visible mining scares. The shales forming the upper soil horizons support a wide variety of native flowering grassland species including wild strawberry, cowslip, foxglove and wild thyme, and the site is increasingly becoming re-vegetated by scrub species. Incredibly Fine views of the Taff and Cynon valleys are afforded from the summit ridge, while the line of the former Glamorganshire Canal is also discernible.
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Wow! Tarren y Bwllfa looms large over the valley below. It is one of Britain's most Southerly glacial cwms. Stunning views of the Brecon Beacons and the former industrial landscape nearby.
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Cefn Eglwysilan is a hill in South Wales, the twin 1,253 feet (382 m) summits of which lie just over one mile (2 km) east of Pontypridd in Rhondda Cynon Taf county borough. Its eastern side lies within the community of Aber Valley in Caerphilly county borough. Like neighbouring Mynydd Eglwysilan, the hill is named after the hamlet of Eglwysilan, the church here being dedicated to an obscure saint Ilan. A wireless transmission station is sited on the more northerly of the two summits (at OS grid ref ST 099911). The southerly one is crowned by a trig point. It is a UK listed Marilyn.
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The Rocking Stone or "Y Maen Chwyf" in Welsh is a glacial boulder remaining from the Ice Age. It formed the central point for a "Gorsedd" or "Gathering of Bards" in 1814, which was organised by stonemason, Edward Williams, known as "Iolo Morganwg". The Gorsedd Circle of smaller stones was constructed in 1849 by Evan Davies, Bardic name "Myfyr Morganwg" and has often been used for Bardic gatherings, and as a focal point for other public occasions.
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The Rocking Stone ('Y Maen Chwyf' in Welsh) is a glacial boulder left over from when ice sheets covered these lands. The stone circle that surrounds the stone was constructed in 1849 by Evan Davies. The site has often been used for Bardic gatherings and public events.
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The Rocking Stone or “Y Maen Chwyf” in Welsh is a glacial boulder dating back to the Ice Age. It was a focal point of the “Gathering of Bards” organised by stonemason Edward Williams in 1814.
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The Rocking Stone in Pontypridd is set within the middle of a fake Druidic stone circle, it's not prehistoric.
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The region offers a variety of natural features. You can visit Tarren y Bwllfa, one of Britain's most southerly glacial cwms, offering stunning views of the Brecon Beacons. Another notable spot is Cefn Eglwysilan Trig Point, a hill with expansive views from its summit. For dramatic valley vistas, explore Giant's Bite, which provides fine views of the Taff and Cynon valleys. Additionally, the Taf Fechan Local Nature Reserve features a narrow river gorge, ancient woodlands, and diverse habitats.
Yes, The Rocking Stone and the Gorsedd Circle is a significant historical natural monument. The Rocking Stone, or 'Y Maen Chwyf' in Welsh, is a glacial boulder dating back to the Ice Age. It was a focal point for 'Gatherings of Bards' as early as 1814, with the surrounding Gorsedd Circle constructed in 1849.
For breathtaking panoramic views, consider visiting Tarren y Bwllfa, which offers stunning vistas of the Brecon Beacons. Cefn Eglwysilan Trig Point also provides expansive views from its twin summits. Another excellent viewpoint is Giant's Bite, where you can enjoy fine views of the Taff and Cynon valleys from its ridge top.
The Taf Fechan Local Nature Reserve is particularly rich in wildlife. It's known for diverse flora, including rare aquatic plants, and supports aquatic insects like dragonflies. Birdwatchers can spot species such as Little Grebe, Mallard, Moorhen, Reed Bunting, Kingfishers, Grey Herons, Dippers, and Common Sandpipers. The reserve's ancient broadleaved woodlands and calcareous grasslands also provide habitats for various other species.
Yes, The Rocking Stone and the Gorsedd Circle is categorized as family-friendly. Its historical significance and unique glacial boulder make it an interesting and accessible spot for families to explore. The Taf Fechan Local Nature Reserve also offers gentle trails through woodlands and along the river, suitable for family walks, though caution is advised near the river.
The area around Mountain Ash East is excellent for various outdoor activities. You can enjoy hiking on trails like the 'Giant's Bite and Taff Trail Loop' or the 'Twyn Brynbychan Trig Point – Giant's Bite loop'. For road cycling, routes such as 'Smooth Tarmac Cycleway – Rhigos Climb Viewpoint loop' are available. Gravel biking enthusiasts can explore challenging routes like 'Talybont Reservoir – Pontsticill Reservoir loop'. You can find more details on these activities in the hiking guide, road cycling guide, and gravel biking guide for Mountain Ash East.
Absolutely. Many natural monuments are integrated into hiking routes. For example, you can hike the 'Giant's Bite and Taff Trail Loop' which is an easy 7 km route, or the moderate 'Twyn Brynbychan Trig Point – Giant's Bite loop' covering about 14.6 km. The Taf Fechan Local Nature Reserve also has trails through its diverse habitats. For more hiking options, refer to the hiking guide for Mountain Ash East.
The natural monuments can be enjoyed throughout the year, but spring and autumn often offer the most pleasant conditions for outdoor activities. Spring brings fresh greenery and blooming flora, especially in nature reserves like Taf Fechan. Autumn showcases beautiful foliage in the woodlands. While winter walks are possible, some trails might be muddy or slippery, especially at higher elevations like Cefn Eglwysilan Trig Point or Tarren y Bwllfa.
Visitors frequently appreciate the stunning panoramic views from viewpoints like Tarren y Bwllfa and Giant's Bite, which offer perspectives of the Brecon Beacons and the Taff and Cynon valleys. The historical significance of sites like The Rocking Stone also draws interest. The diverse ecosystems and tranquil walks within places like the Taf Fechan Local Nature Reserve are also highly valued by the community.
While the main highlights are well-regarded, the Taf Fechan Local Nature Reserve could be considered a hidden gem for those interested in ecological diversity. It's a testament to nature's resilience, having recovered from past industrial pollution, and offers a thriving ecosystem with rare plants and abundant birdlife within its gorge, woodlands, and grasslands.
The duration varies depending on the monument and your activity. Visiting a viewpoint like Giant's Bite or Cefn Eglwysilan Trig Point can range from a quick stop to a few hours if combined with a hike. Exploring Taf Fechan Local Nature Reserve or the area around The Rocking Stone could take anywhere from one to three hours, depending on how much you wish to explore the trails and surroundings.


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