Having alighted from 172472 at Knaresborough, Mike watches it leave the station and cross the magnificent viaduct that was opened in 1851. A clearer view of the viaduct can be seen at....
https://www.ontheupfast.com/v/photos/21936chg/28633907404/pacer-13-11-york-leeds-2c33-knaresborough Most of this route still operates absolute block with a number of signal boxes having control of the line. Knaresborough's box can be seen to the right of the rear cab of the 11.11 York to Leeds service, being built into the end of the row of terraced cottages