‘Visited’ 30.3.11
There doesn’t appear to be any easy public access to this site so I tool the easy option and viewed from afar! This ‘mound’ is massive. If it is man made it can’t be much smaller than Silbury Hill. Easily seen from the roundabout off Junction 7 of the M5. Well worth a look.
(Best if someone else is driving when having a look!!)