It was quite a trek to this one as after seeing a police car at the other one I decided to park in Broad Blunsdon and go cross country.  And then when I got there the tramlines were seriously soggy and like long muddy puddles.  I think this was the field that the farmer sprayed as the tractor tyre marks looked fresh, but I decided as I had come all this way - it would have been a massive trek for you - I would go in and take the groundshots as I'd intended, I do after all live in Swindon, so it's easiest for me to do this.
 
The reference to Water Eaton and the Civil War I feel is quite correct, although this did take place at Water Eaton north of Oxford, the significance still holds valid.  I think that this one as it is a round shape is a Roundhead - This circle and the tree and tramline formation in the opposite field are combined a Cavalier - his hat.  The partner formation in Water Eaton - as they do do this - is right by an enclosure, which is interesting. 
 
I think this circle was laid before the other one as the stalks had bounced back to a higher level.  I travelled round clockwise from the entry tramline point at the south west of the field.

Clare Kingston