Best natural monuments around Cwm Gwaun are characterized by a unique landscape shaped by glacial meltwater channels during the last Ice Age. This V-shaped valley features steep, wooded side-valleys and the meandering River Gwaun. The area is home to ancient woodlands and significant wetland areas, contributing to its rich biodiversity. These natural features offer diverse opportunities for exploring the region's geological history and ecosystems.
Last updated: July 1, 2026
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Views all round, to the sea, Cardigan Bay, north and Milford Haven in south.
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Mynydd Carningli, or Carningli for short (or "Carn Ingli"), is almost 350 meters high and around 450 million years old. It is a long-extinct volcano that has been eroded by sea, rainwater, and wind. Today, only the core of Carningli remains. It was first documented as "Mons Angelorum" (Mountain of the Angels) in the 12th century. Saint Brynach is said to have lived nearby in a small community of monks around 450 AD and often climbed the mountain to speak with the angels. Those who climb the mountain today, enjoying the peace and the surrounding views, can easily imagine that the saint—like other people—sought proximity to the angels there.
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This is a beautiful little hill with a trig pointed summit, great views out over the Pembrokeshire coastline, and an Iron Age fort. There is also a great car park at the bottom of the hill and a good footpath to its rocky top. A 20 minute trip will see you up and down. It was cold today, but on a sunny day it would be a heavenly picnic spot.
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A trig point with a lovely view. Nice place to sit half way around the Dinas headland loop and take in the scenery and have a break.
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Dinas Head on Dinas Island has a trig point at 142 m above the sea. The views along the coast in either direction are great, as is the Irish Sea in front of you. There is a nice coast path loop around Dinas Island with this as the highest point.
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A rugged hill with an Iron Age hill fort on top of it. This vantage point offers views over the north Pembrokeshire coastline to the south west as well as views over Strumble Head to the north.
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The steep climb (at least coming from the coast is rewarded with a magnificent view! We could see our entire loop from there. Wonderful!
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Lovely viewpoint and peak. On a clear day you can see right across Newport and the Preselli's. There is a free car park on Ffordd bedd Morris Road or you can park at Newport Bridge.
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Cwm Gwaun is primarily a significant meltwater channel, a V-shaped valley carved by glacial waters during the last Ice Age. This geological history has created distinctive steep, wooded side-valleys. The meandering River Gwaun flows through it, supporting ancient woodlands and vital wetland areas, all contributing to its rich biodiversity.
Yes, the region offers several prominent summits and viewpoints. You can visit Carningli Mountain, a beautiful coastal summit in the Preseli range offering views across Newport and the Preseli's. Another option is Garn Fawr summit and trig point, which provides magnificent views over the Pembrokeshire coastline and features an Iron Age fort.
Cwm Gwaun's diverse habitats support a variety of wildlife. Along the River Gwaun, you might spot dippers and grey wagtails. The ancient woodlands are home to birds like tree pipits, redstarts, tits, nuthatches, and pied flycatchers. If you're lucky, you could also encounter otters, polecats, and dormice.
Yes, some natural monuments in Cwm Gwaun also hold historical significance. For example, Foel Drygarn Hillfort and Cairns is an impressive hillfort dating from the late Bronze Age or early Iron Age, featuring three Bronze Age burial cairns and numerous hut circles. Similarly, Garn Fawr summit and trig point also hosts an Iron Age fort.
Cwm Gwaun is beautiful year-round. Spring brings lush greenery and blooming wildflowers, while autumn offers spectacular foliage changes in the ancient woodlands. Summer provides pleasant weather for riverside walks, though the river can be a slowly meandering stream. The geological features and woodlands are accessible in most seasons, but be prepared for potentially boggy conditions, especially after rain.
Yes, the Pembrokeshire Coast National Park Trail includes a 5-mile nature trail within Cwm Gwaun, offering accessible routes to experience its woodlands, river, and geological formations. This established trail is suitable for families looking to immerse themselves in the valley's natural beauty.
Beyond exploring the natural monuments themselves, Cwm Gwaun offers various outdoor activities. You can find numerous MTB trails, road cycling routes, and running trails in the surrounding area, catering to different difficulty levels.
For extensive coastal views, Dinas Head is an excellent choice. This headland offers breathtaking views out to sea and along the Pembrokeshire coastline. It's a popular spot for a scenic loop walk, and if you're fortunate, you might even spot dolphins.
The side-valleys of Cwm Gwaun are densely wooded with semi-ancient natural woodlands, featuring species like oak, beech, alder, rowan, ash, and willow. These woodlands are vital habitats for diverse flora and fauna, providing beautiful scenic walks and contributing significantly to the valley's ecological importance.
Foel Cwmcerwyn summit is the highest point of the Preseli Hills and Pembrokeshire's County Top. The approach from the north is generally gentler, though it can be boggy, while the south face footpath is steeper with better panoramic views. It's a great spot for hill bagging and offers extensive views over Pembrokeshire.
Yes, Cwm Gwaun is recognized as a special wetland area, which significantly enhances its ecological importance. These wetlands, along with the ancient woodlands and the River Gwaun, are crucial for biodiversity, supporting unique plant life and a wide array of wildlife.


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