Northern Viaduct Trust walk entrance to Merrygill Viaduct

The walk entrance sits just outside Kirkby Stephen, a proper gateway to one of the Eden Valley's most dramatic engineering feats. The Northern Viaduct Trust has opened access to Merrygill Viaduct, and what you're looking at is a 540-foot Victorian railway span that somehow manages to feel both monumental and almost delicate when you approach it on foot.

The viaduct itself - completed in 1875 - carries your eye across a deep wooded gorge with real presence. There's something about Victorian ironwork that photographs well but affects you differently in person; you feel the scale of it properly. The walk in is straightforward enough, taking you through mixed woodland and along the beck, though the terrain can be boggy after rain so decent boots aren't optional.

History enthusiasts will find this absorbing - it's part of the Settle-Carlisle line, that extraordinary engineering achievement. But you don't need to care about railway heritage to enjoy the walk. The gorge itself is lovely, with moss-covered stone walls and the sound of water running beneath. Allow a couple of hours for the round trip, less if you're quick.

Families with older kids will manage fine. Younger ones might struggle with the uneven ground and lack of formal facilities. Base yourself at Gillcumber Glamping Pods nearby if you want something comfortable - they're consistently highly rated and well-positioned for exploring this corner of Cumbria. The walk works best in late spring when the woodland's flush with growth.