I visited the crop circle at burrow Hill Fort, Rock lane, nr Corley, Warwickshire earlier today - there are photos a few pages back here. (sorry, I tried attaching an image and pressing insert image button - but no photo came forth!).
I have visited crop circles before, mainly back in 2008, and understand that everyone has a different idea as to their authenticity and potential meaning.
Fwiw, based on my personal observations, feeling and dowsing, my own interpretations are:
Both the larger and the smaller circles may be symbolic of Earth.
The smaller one has a solitary wheat stem growing in the centre (not quite ripened unlike the adjoining crop - see ground photos on link below) which I interpret as Earth almost ready for the harvest.
The larger one (which I had previously thought to be the Sun until I dowsed) I also interpret as Earth 'opening up' or blooming.
Also, whilst standing in the larger circle and gazing up I noticed a white passenger jet - but when I turned around a only a few seconds later, it wasn't there anymore, despite the clear blue sky in its path???
Strange! I am sure I recall Laura mentioning something similar.