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The Top 20 Caves In South Wales

Looking to visit a cave In South Wales on your next adventure? To help you better plan your next outdoor experience, we’ve collected South Wales’s 20

best caves for you. Based on the experiences of other users, each is a recommendation you know you can trust — so you can better plan your next adventure.

Last updated: September 26, 2025

Pembroke Castle

Pembroke Castle is a medieval castle that was founded in 1093. The Grade I-listed castle is now a great place to explore.



You can climb the Great Keep, descend into …

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This small hermit’s chapel can be found at the bottom of a long and steep set of steps, nestled into the cliffs. The effort is worth it, though, as this …

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Porth Yr Ogof (gateway to the cave, in Welsh) boasts the largest entrance of any cave in Wales at over 55 feet (17 m) wide and almost 16 feet (5 …

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Chartist cave - discover where they stored their weaponry and where the walk to Newport effectively began!

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With a wide and sandy beach, clean sea water, caves to explore, and springs gushing out of the cliffs, this dune-backed beach really is a slice of paradise off the …

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This unique harry potter type of witch house is an amazing must see. Nestled in a cleft in the rock it is simply a tall stone wall with no doors …

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Often referred to as the Robin Hood of Wales, Twm Siôn Cati is said to have used this cave as his hiding place to avoid being captured.



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This little slice of hidden beach paradise - also known as Flimston Bay, is not so easy to access. The good news is that your effort is likely rewarded by …

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This charming RSPB site is not far from Llyn Brianne and is home to Twm Sion Cati's cave. You'll find a great circular footpath running nearby the river, boasting beautiful …

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St Catherine's Island is a small limestone outcrop with lots of tidal caves. On top of the island is a fort that was built during the Napoleonic Wars. You can …

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