Best natural monuments around Craswall are found within the Black Mountains, a landscape straddling the border between south-east Wales and England. This region features prominent hills, dramatic peaks, and extensive views over valleys and countryside. The area is characterized by its unique geological formations and offers numerous opportunities for outdoor exploration.
Last updated: August 24, 2026
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Pen y Gadair Fawr stood at an impressive height of 800 metres, and is an subsidiary summit of the highest peak within the Black Mountains … and that is the summit that is of Waun Fach-(811m). Pen y Gadair Fawr is the second highest peak that’s located in the Black Mountains in south-eastern Wales. Marked by a medium-sized cairn, it is a much more distinguished top than its parent 1.5 km to the northwest. Its 658 metres high top Pen Twyn Mawr is about 2 km to the southeast.
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A fine viewpoint, but the cairn has gone (was getting a bit big).
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A beautiful path through the forest to a small waterfall.
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Brilliant viewpoint and lots of route choices that run you south through the Black Mountains
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Pwll y Wrach is a waterfall feature on the River Ennig. The river plunges in two separate streams over a lip of hard rock into a pool formed from softer mudstone. It is suggested that the pool got its name from the ancient method of identifying and punishing witches!
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Pwll y Wrach is a waterfall feature on the River Ennig. The river plunges in two separate streams over a lip of hard rock into a pool formed from softer mudstone. It is suggested that the pool got its name from the ancient method of identifying and the punishment for witches!
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In terms of height, Pen y Gadair Fawr plays second fiddle only to Waun Fach as the Black Mountains' second highest summit. However, where Waun Fach's top is broad and relatively uninspiring, Pen y Gadair Fawr's is a little more like a peak in character. The summit is at a junction of paths: head east for Chwarel y Fan and the Mynydd Du Forest, venture south to Pen Twyn Mawr, or stride northeast to Waun Fach.
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The Black Mountains region around Craswall offers several stunning viewpoints. Hay Bluff, at 677 meters, provides expansive views over the middle Wye Valley and Hay-on-Wye. Another iconic spot is Twmpa (Lord Hereford’s Knob), which offers stunning vistas from its position on the Black Mountains' northwest scarp. For panoramic views, especially as part of the Waun Fach horseshoe, visit Pen y Gadair Fawr Summit Cairn, the second highest peak in the Black Mountains at 800 meters.
Yes, Pwll y Wrach Waterfall is a notable natural monument near Craswall. Located within an ancient woodland nature reserve, it features dramatic waterfalls and a network of woodland paths, making it a great place to explore year-round, even on wet days.
The Offa's Dyke Path is a significant historical natural monument. This large linear earthwork roughly follows the border between England and Wales and is named after King Offa of Mercia. It's a 176-mile long-distance footpath, offering a unique blend of natural beauty and historical significance.
The area around Craswall is ideal for various outdoor activities. You can find numerous hiking trails, including easy routes like the Lord Hereford's Knob and Gospel Pass Loop, or more challenging ones like the Black Hill & the Cat's Back ridge. Road cycling is also popular, with routes such as the Gospel Pass & Black Mountains loop. For more details on routes, you can explore the easy hikes around Craswall, road cycling routes, and running trails.
Many natural monuments in the Craswall area are suitable for families. Hay Bluff is a popular spot for family picnics and walks, with ample parking in dry weather. The path that traverses its slope is recommended for walks with children. The woodland paths around Pwll y Wrach Waterfall also offer an engaging natural environment for families to explore.
The Black Mountains region around Craswall offers beauty year-round. Spring brings blooming wildflowers and the sounds of chiffchaffs, while early summer sees carpets of bluebells. Autumn transforms the landscape with vivid red leaves and diverse fungi. Even in winter, the waterfalls can be particularly dramatic after heavy rain. The best time depends on your preferred activity and scenery, but generally, spring to autumn offers the most comfortable hiking conditions.
For Hay Bluff, there is a main car park below the bluff, and ample parking is often available off the road in dry weather. Twmpa (Lord Hereford’s Knob) is easily accessible from the car park at Gospel Pass, which is a well-known viewpoint in the area.
The Black Hill, locally known as the 'Cat's Back,' is characterized by its distinctive, undulating ridgeline that follows the border of England and Wales. This dramatic peak offers some of the most incredible views of the area, particularly from the moderately challenging circular walk that starts and ends at The Bull's Head pub car park in Craswall.
Yes, for those seeking a challenge, the area offers several demanding routes. The circular walk around the Black Hill (The Cat's Back) is considered moderately challenging. More difficult running trails include the Hay Bluff Trig Point loop from Llanigon and the Twmpa (Lord Hereford’s Knob) – Gospel Pass loop. Road cyclists can also tackle difficult routes like the Gospel Pass & Black Mountains loop.
The natural monuments around Craswall, particularly in areas like Pwll y Wrach Nature Reserve, are home to diverse wildlife. In spring, you might hear chiffchaffs, and in early summer, pied flycatchers flitter among the trees. Dippers can be seen in the River Enig, and if you're lucky, you might spot hazelnuts chewed by dormice, indicating their presence.
The 'Dragon's Back' (Y Grib) refers to the long ridgeline stretching from Pengenffordd up over Y Grib, part of the Brecon Beacons National Park. Its narrow, rising, and falling profile resembles a dragon, offering a great walk with excellent views. This area is also home to Waun Fach, the highest summit in this part of the Black Mountains.
While the Black Mountains are a rural area, public transport options to Craswall and the surrounding Brecon Beacons are limited. It's advisable to check local bus services for specific routes and schedules, but many visitors find personal transport more convenient for accessing the various natural monuments and trailheads.


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