The Southren Motorway Walk, Scooter Ride Run series
This is a little off the actual tarmac of the cycleway, take care where you tread as the flora and forna growing nicely, The cache is small not much room for swaps but you can place travel bugs and I think a coin would fit, your looking for a Vitaman container covered in Silver Duct tape. BYOP. No need to jump the fence or leave the motorwayside of the fence at all
This is a fast bit of the track so beware of cyclemuggles.