This part of the canal is at the back of Jacks Lane and leads onto the other mill that used exist in Harefeild, Black Jacks.
You'll come to Humpty Bridge, no idea if it has a name, but that's what I call it and you can see why. Taking a divert at the path on the right after the bridge will take you onto a route that takes you across the lakes. Recommended walk on a nice day.
You are looking for a magnetic nano/micro cache. Log only, please bring own pen and replace carefully out of sight from on the bridge. Please note original location can not be seen on bridge or from looking over side, finger tip search required. Please do replace very carefully and try not to drop it in! Please replace on same side and same location as this is a real so and so to locate