There's just a couple of buildings nearby that perhaps once made up the station at Thorpe on the Hill. It was on the Nottingham to Lincoln line and opened in 1854. All that I could find out about it was that it closed 'later' due to lack of use. This cache has been placed to coincide with the 8th anniversary of the SideTracked series.
You are looking for a camo bison. the cache isn't on railway property and there is no need to climb any fences.