O'Haughan's Cave

The entrance to O'Haughan's Cave sits tucked into the limestone near Larne, and it's the sort of place that rewards a bit of curiosity and decent footwear. You're looking at a proper cave system - nothing vast, but atmospheric enough to make you feel like you've stumbled onto something genuinely wild rather than a packaged tourist spot.

What you get is cave passage exploring with a tangible sense of discovery. The limestone formations have that raw, unpolished quality that actually matters - you're not shuffling through a lit tourist route with handrails and a gift shop. Torch essential. The cave itself is modest but genuine, the sort of place where geology feels immediate and real.

This works best for families with children old enough to handle a bit of adventure without needing hand-holding the whole way through, and for walkers who want something with actual substance. History types will appreciate the geological story the rock tells. You're not looking at a day-long attraction - give it an hour or so, depending on how far into the system you want to venture.

It's free, which helps. The practical side: you'll need proper torches and should time it for daylight if you're not experienced with caving. The cave can be muddy and occasionally slippery, so leave the trainers behind.

If you're based at Down to Earth Wild Camping nearby, this makes a solid morning's excursion before heading into Larne proper. It's the sort of local oddity that rounds out a proper day outdoors rather than dominating it.