Trezaise Geological Nature Reserve

The old china clay workings around Trezaise have been left to their own devices, and nature's made a proper job of reclaiming them. You're walking through what used to be an industrial scar - now it's a geological outdoor classroom with quarry faces that tell the story of Cornwall's mining heritage in layers of white, ochre and rust. The reserve sits just outside Stenalees, close enough for an afternoon but far enough out to feel genuinely wild.

What makes it work is the sheer oddness of it. The acidic pools and exposed rock faces attract specialised plants and insects you won't see anywhere else - it's the kind of place where geology nerds and nature photographers actually get excited. You'll find walking trails threading through the old workings, each one revealing different perspectives on how dramatically the landscape changed once humans stopped digging. Allow two to three hours to do it properly without rushing.

It's free to visit, which is the main draw. Families with older kids who can handle uneven terrain will find it more interesting than younger ones might - there's no playground infrastructure, and the terrain requires proper attention. This works brilliantly as a half-day add-on if you're based at somewhere like Tre-End Glamping nearby. You could easily combine it with a larger park circuit in the area without it eating into your schedule. Best visited when the light's golden rather than flat - late afternoon does it justice.