Well, I couldn't resist grabbing this one as part of the JG series - it adds to my Post Post series!
Post Post...How often have you driven past a post box in the middle of nowhere and thought that would be a good place for a cache?
If you wish to add to Post Post just remember to add the post box number after Post Post.
A Post Post should be a cache and dash and depending on the site of the post box accessible for all.
On Castle road in Great Bedwyn.

You will need to bring your own pen.
A transition from the natural landscape of the canal to the heart of the picturesque village of Great Bedwyn.
From JG#30, you need to cross the canal at the lock and make your way across the bridge over the river and follow the walk into the village towards the station.
Can be done as a Cache & Dash at a pinch!
Congratulations to Badcats for First to Find.