Thack Pot

The entrance to Thack Pot is easy to miss if you're not looking - just a dark mouth in the limestone hillside near Barnard Castle, unremarkable until you're actually standing in front of it. It's a proper cave system, the sort of place that rewards a bit of scrambling and makes you feel properly underground rather than just wandering through a manicured show cave.

What you get is a genuine caving experience without needing ropes and harnesses. The passages wind through the rock, low in places, more spacious in others, with the usual damp stone smell and genuine darkness once you're past the entrance. It's genuinely atmospheric - bring a decent torch or headlamp because ambient light won't cut it. The walk itself isn't long, but it depends entirely on how far you want to push into the system.

This is one for people who actually like caves rather than tourists after a quick photo op. Families with adventurous kids will get a kick out of it; younger children might find it claustrophobic or simply too dark. Serious cavers and geology enthusiasts will appreciate the raw, unpolished nature of the place.

Parking and access details are thin on the ground - best to check locally in Barnard Castle before heading out. If you're based at Leekworth or Mickleton Mill caravan parks, it's a straightforward drive, and worth combining with the town's other attractions. Allow an hour or so including the walk there and back, longer if you're exploring properly.