Best natural monuments around Cymmer include the expansive Afan Forest Park and rewilded colliery spoil heaps, which offer significant ecological and scenic value. The region features diverse landscapes, encompassing woodlands, valleys, and unique biodiversity hotspots. These areas provide opportunities for activities such as hiking and wildlife spotting, making them suitable for outdoor enthusiasts.
Last updated: July 1, 2026
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The Garth has a nice flat top with views across the valleys. Lots of sheep grazing too (March). Also a number of mounds provide some cover from the wind if a break is in order
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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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We walked miles. Up to the waterfall on Gillies trail, followed the path up onto the rocky and then to the trig point on Twyn Brynbychan, above the cynnon valleys. Enjoyed a breather on top, before trekking around the back forestry where you can see Aberfan and Merthyr Vale and headed over to the bronze age sight before descending down to Cwmaman and back to the car.
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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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Stunning little hill with commanding views just outside Cardiff with a trig pointed summit. It is a UK listed Marilyn.
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Beautiful little hill on the outskirts of Cardiff with a trig pointed summit and commanding views. Lovely place to catch a sunrise/set.
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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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Cymmer is surrounded by diverse natural landscapes. Key natural monuments include Garth Summit, known for its commanding views and trig point, and Cefn Eglwysilan Trig Point, another UK listed Marilyn offering views across the valleys. Additionally, Giant's Bite presents a dramatic gap in the skyline with views of the Taff and Cynon valleys, formed from a former mine and quarry now reclaimed by nature.
The area around Cymmer, particularly the Afan Forest Park, is excellent for outdoor activities. You can find numerous trails for hiking and mountain biking. For specific routes, explore easy hikes around Cymmer, or for more challenging rides, check out MTB trails around Cymmer. Road cycling routes are also available, such as those found in Road Cycling Routes around Cymmer.
Yes, the Afan Forest Park offers many gentle trails suitable for families. Additionally, The Rocking Stone and the Gorsedd Circle is a family-friendly historical site that also functions as a natural monument, featuring a glacial boulder and stone circle.
The rewilded colliery spoil heaps around Cymmer are unique biodiversity hotspots. You can spot a variety of rare and scarce plant species, numerous bee species, reptiles like common lizards and slow worms, and amphibians and dragonflies in pools. The conifer plantations also provide nesting places for birds such as Goshawk, Crossbill, and Siskin. Afan Forest Park also supports diverse flora and fauna.
The natural monuments around Cymmer can be enjoyed year-round. Spring and summer offer lush greenery, wildflowers, and ideal conditions for hiking and cycling. Autumn brings vibrant foliage, while winter can offer a serene, crisp experience, though some trails might be muddy or icy. Always check local weather conditions before your visit.
Many trails within the Afan Forest Park and around the natural monuments are dog-friendly. However, it's important to keep dogs under control, especially in areas with livestock (like the sheep often found near Garth Summit) or sensitive wildlife habitats. Always follow local signage and keep your dog on a lead where required.
Yes, The Rocking Stone and the Gorsedd Circle is a significant historical site. This glacial boulder, known as 'Y Maen Chwyf', dates back to the Ice Age and has been a focal point for Bardic gatherings. The surrounding Gorsedd Circle was constructed in 1849, connecting the natural landscape with Welsh cultural heritage.
For visiting the natural monuments around Cymmer, especially if you plan to hike or cycle, wear appropriate outdoor clothing. This includes sturdy walking shoes or boots, layers of clothing to adapt to changing weather, and waterproofs. The terrain can be varied, so comfortable and supportive footwear is essential.
While many areas of Afan Forest Park offer a range of trails, some natural monuments like Garth Summit and Cefn Eglwysilan Trig Point involve climbs to summits. The Afan Forest Park does have some accessible paths, particularly along former railway lines, which are generally flatter. It's advisable to check specific trail details for accessibility information before your visit.
Visitors frequently appreciate the commanding views from summits like Garth Summit and Twyn Brynbychan Trig Point. The tranquility of the Afan Forest Park, the unique ecological recovery of the rewilded colliery spoil heaps, and the opportunity for diverse outdoor activities like hiking and cycling are also highly valued.
Yes, the Afan Forest Park, which encompasses many of the natural attractions, offers visitor centers and parking facilities. For specific natural monuments like Garth Summit or Cefn Eglwysilan Trig Point, parking is typically available at nearby trailheads or designated areas, though it might require a short walk to reach the monument itself.


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