The frost is slow to melt in the depths of a Yorkshire winter as a Northern Class 144 crosses the viaduct at Knaresborough.
144019 on Knaresborough Viaduct.
144021 with a Knaresborough - Leeds service crossing Crimple Viaduct, North Yorkshire.
144021 with a Leeds - Knaresborough service crossing Crimple Viaduct, North Yorkshire.