This new Spin-off has the bonus of the discovery of a two mile stretch of private – but available – rail trackbed up the River Ash valley towards Much Hadham. Like the discovery of sections of abandoned road that connect up the network elsewhere, this was an exciting find. Mapping can reveal much, but only reccying can confirm or reject a route. All in all a lovely ride in four contrasting sections – and an important connector towards Cambridge on NCN 11.