Welcome to the February update of Forgotten Relics.

If you're a regular visitor to this website it's fair to presume that you can see the glory in Victorian railway engineering. But how many of us have spent several years of our lives trying to protect a bit of it? Well Richard Murphy has.

Following a chance encounter, he resolved to ensure Slapewath Viaduct near Guisborough remained part of our landscape for future generations to marvel at. And his efforts have recently been rewarded - the structure has gained a Grade II listing. His story is an inspirational one and a worthy read for those of us who are full of good intentions.

This month's pair of 'big' structures have been handed roles that should also secure their continued existence. Cwm Prysor Viaduct was the defining engineering feat on the line that cut through the wilderness of North Wales to connect Bala and Blaenau Ffestiniog. Its nine arches can be found in the middle of nowhere, offering breath-taking panoramas. An agreement between the Snowdonia National Park Authority and local landowner means that walkers can now cross it on a permissive path. It's well worth walking the old trackbed as far as Trawsfynydd, fives miles further west.

The Cuckoo Line (the subject of a new entry on our Railway films page) linked a handful of communities in East Sussex. Like so many it succumbed to the railway's restructuring in the Sixties, but part of it has since been transformed into a cycleway. To facilitate a future extension, the 265-yard Heathfield Tunnel, which curves its way beneath the west side of the town, was refurbished and lit as part of a Millennium project.

Forgotten Relics doesn't cover many stations, largely because Nick Catford has already developed a superb resource that features many hundreds of them - his Disused Stations website. If you have a few days to spare, it's well worth perusing. But undeterred our South-East correspondent has journeyed to the Kent coast to explore the lengthy platforms of Folkestone Harbour Station. A relatively recent closure victim, its current state of dilapidation cannot completely mask the important role it once played.

The Ticknall Tramway was built to link quarries, brickworks and collieries with the new Ashby Canal. Near Calke Abbey it passed through Basfords Hill Tunnel, the shorter of two tunnels in close proximity to each other. Alan Jewell ventured inside it in 2006, since when it has been completely refurbished - a reality captured recently by John Simmonds' camera.

Also worthy of note this month is our updated gallery of Kielder Viaduct pictures. This delightful structure in deepest Northumberland celebrates its 150th anniversary this year and several events are planned to mark it.