The South Tynedale Railway is a preserved, 2 ft narrow gauge heritage railway in Northern England and at 875ft is England's second highest narrow gauge railway after the Lynton and Barnstaple Railway in north Devon. The South Tynedale line runs from Alston in Cumbria, down the South Tyne Valley, via Gilderdale, Kirkhaugh and Lintley, then across the South Tyne, Gilderdale and Whitley Viaducts to Slaggyford in Northumberland.

Alston is a town in Westmorland and Furness, Cumbria, England, within the civil parish of Alston Moor on the River South Tyne. It shares the title of the 'highest market town in England', at about 1,000 feet (300 m) above sea level, with Buxton, Derbyshire. Despite its altitude, the town is easily accessible via the many roads which link the town to Weardale, Teesdale, and towns in Cumbria such as Penrith via Hartside Pass, as well as Tynedale. Historically part of Cumberland, Alston lies within the North Pennines, a designated Area of Outstanding Natural Beauty. Much of the town centre is a designated Conservation Area which includes several listed buildings.