These fields are near a favourite Pig walk and Elby was looking for alternative routes. He got excited when he noticed what appeared to be an iron age hill fort (it overlooks a valley) and tried in vain to find it.
link to map here.
Then he found this map. Poooof! All gone.
update: Excitement over but mystery not solved. Clearly the ancient monument is not what it seems.
This is the the 2005 picture:
This is the 2001 picture:
Which still begs the question WTF is it? Why was Elizabeth writing about it? I am relieved nothing precious has been destroyed and I am sorry to get everyone excited and outraged needlessly. Elby thinks it is a UFO landing site. It has been an interesting quest.