Hi Chris
Welcome to TMA, Chris!
I know nothing of Farmington I'm afraid except there was once a long barrow there.
http://www.themodernantiquarian.com/site/5517

Moth and I went there a couple of years ago, but it's mostly melted away into the field. If you know anything about long barrows and have a lot of imagination, you can just make out the shape - just - within the earthworks of Norbury camp. It would be VERY interesting to see an aerial photo of the place to see if it shows up as cropmarks. I bet it does.

I bet not long ago the Farmington barrow was as good as Lamborough Banks still is just 4miles to the west of you.
http://www.themodernantiquarian.com/site/4979
J
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