Best natural monuments around Betws include a variety of historical sites, summits, and unique geological features. The region offers diverse landscapes, from ancient castles to mountain peaks and underground river sources. These locations provide opportunities for exploration and discovery of natural and historical significance.
Last updated: May 3, 2026
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Wow just wow, didn’t expect the cave below the castle !!!
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The River Loughor is a river in Wales that marks the border between Carmarthenshire & Swansea. The river is sourced from an underground lake at the Black Mountain emerging at the surface from Llygad Llwchwr, which translates from the Welsh as eye of the Loughor😀
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At just 440 metres Tair Carn Isaf is a modestly sized hill, but its prominence at the western end of the Black Mountain, high above the Amman Valley, affords extensive views over central south Wales, into Powys, west to the Preselis, and over the Gower Peninsula and Severn Estuary.
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Carreg Cennen Castle is erected sometime after 1284 by Baron John Giffard and his son on the site of an earlier Welsh fortification. In 1462, Carreg Cennen flies the Lancastrian flag. Taken on behalf of the Yorkist king Edward IV, it is slighted by pick and crowbar, ending its life as a stronghold. Carreg Cennen castle is spectacularly located on a great limestone crag about 90m above the river Cennen, offering views miles around.
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Garreg Lwyd, also known as Moel Gornach, is a peak in the Black Mountain of the Brecon Beacons, South Wales. It is a subsidiary summit of Fan Brycheiniog. It is the westernmost area over 2,000 feet above sea level in South Wales.
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Herbert’s Quarry is part of the Black Mountain and Mynydd Myddfai Registered Landscape of Outstanding Historic Interest in Wales. Unlike in other lime producing areas where canals and tramroads could be built, the industry at Herbert’s Quarry was served solely by road transport. The lime trade was a factor in the development of Turnpike roads, and the network of tracks and roads over the mountain is closely associated with the activity at Herbert’s Quarry. As you walk through the site you are taking a journey through time, and walking in the footsteps of many hundreds and thousands of people before you, people whose hard work, sweat and drudgery shaped this landscape and left a rich industrial legacy.
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Ruin of a late thirteenth-century castle, on a limestone rock where there may already have been a fort in the Iron Age. The earliest castle was most likely the work of the dynasty of Welsh princes. The oldest found written mention of the castle dates "only" from 1248 when Rhys Fychan (died 1271), great-grandson of Lord Rhys, conquered the castle from the English. In 1277 the castle was captured by Edward I of England in his first campaign against Llewelyn ap Gruffudd of Gwynedd (died 1282).[1] The castle was briefly reconquered in 1282 and 1287. In 1282–83 Edward I completed his conquest of Wales and granted Carreg Cennen Castle in 1283 to his loyal supporter John Giffard (d. 1299), baron of Brimpsfield (Gloucestershire). The current castle was most likely built by Baron Giffard and his son John (died 1322), not too long after 1284. Being a resident of Ghent myself, I thought it was a nice fact that the castle was in the hands of John of Gaunt (yes, John of Gaunt), Duke of Lancaster, for a while in the 14th century. During the War of the Roses (1455-1485), Carreg Cennen Castle was initially in Lancaster hands, but was later conquered by the York supporters. In the late 18th century the castle became popular among amateur archaeologists and artists, with William Turner visiting the castle in 1798. In the 19th century the second Earl of Cawdor began restoration work on Carreg Cennen Castle. In 1932 the castle came under state management. In the 1960s the castle became the property of the Morris family, owners of the Castell Farm farm near the castle. Source: Wikipedia The castle can be visited 364 days of the year. Just not on Christmas Day. 9:30 am - 4:30 pm (from April to October until 5:00 pm) The ticket desk is located at the tea room / gift shop ("downstairs", where the parking is also located). In high season and on weekends, tickets can also be purchased near the entrance to the castle. Entrance prices range from £6.50 for adults, £4.00 for discount holders, to £20.00 for a family ticket.
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Tair Carn Isaf at 460m stands at the western end of the Brecon Beacons National Park. This position creates amazing views south over the Gower and out to the Bristol Channel and west towards Pembrokeshire. There are three stone cairns on the summit, one has a trig point.
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Visitors frequently enjoy exploring Carreg Cennen Castle, a historic site with awesome viewpoints. Another popular spot is Herbert's Quarry, which tells the story of 200 years of lime burning. The magical Llygad Llwchwr (Source of the River Loughor), where the river emerges from an underground lake, is also a must-see.
Yes, the area is rich in historical natural monuments. Carreg Cennen Castle, likely built in the late 12th century, offers a glimpse into medieval history. Herbert's Quarry is another significant historical site, showcasing the industrial legacy of lime burning and quicklime production over two centuries.
The region boasts several unique geological features. Llygad Llwchwr (Source of the River Loughor) is a fascinating cave system where the River Loughor emerges from an underground lake. The area also features prominent mountain peaks like Garreg Lwyd Summit and Tair Carn Isaf Summit, which are part of the Black Mountain range.
The Betws area offers diverse outdoor activities. You can find numerous hiking trails, including moderate routes around Carreg Cennen Castle or easy loops to Tair Carn Isaf Summit. For more options, explore the hiking guide for Betws. Mountain biking and road cycling routes are also available; check out the MTB trails guide and road cycling routes guide for the area.
Yes, there are several hiking trails. For example, you can enjoy a moderate 10 km loop around Carreg Cennen Castle, or an easier 3 km loop to Tair Carn Isaf Summit. Many other routes, ranging from easy to difficult, are available in the hiking guide for Betws.
From summits like Garreg Lwyd Summit, you can expect panoramic views as it's the westernmost 2,000-footer of the Black Mountain range. Tair Carn Isaf Summit, though modestly sized, offers extensive views over central South Wales, including the Gower Peninsula and the Severn Estuary.
Visitors appreciate the diverse landscapes, from ancient castles with awesome viewpoints to unique geological features like the source of the River Loughor. The historical significance of sites like Herbert's Quarry and the opportunity for exploration are also highly valued. The komoot community has shared over 55 photos and given more than 60 upvotes to these highlights, indicating their appeal.
Yes, you can explore the fascinating Llygad Llwchwr (Source of the River Loughor). This magical spot is where the River Loughor emerges from an underground lake, and it contains a 1.2 km-long cave system below the surface. While parts require cave diving, the emergence point itself is accessible and intriguing.
Absolutely. Carreg Cennen Castle is a prime example, offering not only a rich history dating back to the 12th century but also awesome viewpoints and picnic spots around its perimeter. Similarly, Herbert's Quarry combines historical remnants of 200 years of industry with the natural beauty of the surrounding Black Mountain landscape.
Among the listed natural monuments, Garreg Lwyd Summit stands at 2,021 feet (616 m). It is the westernmost high outpost of the Black Mountain range, offering a relatively quick ascent and expansive views.
For a shorter visit, you could explore the immediate surroundings of Llygad Llwchwr (Source of the River Loughor) to witness the river's emergence. An easy hike to Tair Carn Isaf Summit is also a good option, with a 3 km loop available, providing beautiful views without a strenuous climb.


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