Harlton Clunch Pit

The chalk pit at Harlton sits a few miles south-east of Cambridge, and honestly, it's one of those places that rewards a bit of curiosity. You're looking at a proper geological feature - a former quarry where Victorians dug out clunch, the soft chalky stone that built half of Cambridgeshire's churches and cottages. Walk down into it and you'll see the exposed layers of chalk, pale and weathered, with the rim of the pit fringed by scrubby trees and wild plants that have colonised the edges over decades.

It's not a manicured tourist spot. There are no visitor facilities, no cafe, no gift shop. You just turn up and have a poke around for as long as it takes - twenty minutes if you're cursory, an hour if you're into geology or sketching. The site has a quietly abandoned feel that some will find atmospheric and others might find a bit underwhelming, depending on what you're after.

This works best for walkers exploring the Cambridge countryside, and genuinely for anyone interested in how local building materials shaped the landscape. Kids might find it interesting for five minutes, then get restless. The pit itself is free to visit and accessible year-round, though winter mud can be a nuisance.

If you're staying at Guilden Gate Glamping nearby, it's worth a detour on a ramble through the area rather than a destination in itself. Pair it with other chalk pits in the region or walks along the Cam valley to make a proper afternoon of it.