Zig Zag Cave

The entrance is easy to miss if you're not paying attention - just a modest opening in the hillside above Neath, but once you're inside, Zig Zag Cave reveals itself as a proper underground experience. The passages twist through limestone in that distinctive zigzag pattern that gives the place its name, and you'll need a torch unless you fancy shuffling about in near-total darkness. It's the kind of cave that feels genuinely wild - no safety rails, no visitor centre, just you and the stone.

Walkers exploring the Brecon Beacons should absolutely work this into their itinerary. The cave itself takes 20 minutes or so to navigate, though you can easily spend longer poking around the different chambers. Children who aren't claustrophobic tend to love it - there's something about crawling through tight spots and discovering hidden passages that gets them going. Adults after a bit of adventure without the crowds will find it rewarding too.

The practical reality is that access details are thin on the ground - bring your own lighting, wear decent shoes with grip, and check locally in Neath before heading out. If the weather's been wet, water levels can make sections tricky. Combine this with the excellent camping options nearby - Four Falls Glamping is barely over a mile away, and Brecon Beacons Camping sits nicely for a week exploring the wider area - and you've got a proper outdoor break sorted. This isn't a tame tourist attraction. It's for people who actually want to explore.