Moelfre Manganese Mine (disused)

The old manganese workings near Llanbedr are scattered across the hillside like industrial archaeology left to the bracken and time. You won't find much signposting, and there's no visitor centre or gift shop - it's just the bare bones of Victorian enterprise: crumbling stone structures, overgrown spoil heaps, and the occasional rusted bit of machinery half-swallowed by moss. The mine operated sporadically from the mid-1800s when manganese was wanted for steel production, though it never became a major operation. Walking the site takes patience and decent boots. Most people allow an hour or two, depending on how deep into the scattered remains you want to venture.

This appeals most to industrial history buffs and walkers who like a proper puzzle - the site demands you read the landscape and imagine what went where. Families with younger children might find it frustrating; there's not much to do beyond poking around and taking photos. It's free to visit, and you can access it from the lanes around Moelfre, though parking is tight.

Stay at Lyons Sunnysands or Shell Island - both are within four miles - and you'll be well-placed for a morning scramble through the workings before heading to Rhaeadr Nantcol Waterfalls or exploring the coast. The whole area is strong on walking, so treat the mine as part of a bigger day out rather than a standalone visit. Don't expect facilities or interpretation; bring a map and go with a sense of discovery.