On Thu, 19 Mar 2015 15:34:57 -0700 (PDT), JimK wrote:

Cause the line of the base of the wall is mostly straight but
sections deviate from that line in the downhill direction.

And these stones are/were underground?

Apart from the top inch or less yes and they ain't little stones 12"
x 18" x 6" or there abouts.

This wall is marked on the earliest OS map I've seen for here, 1847
IIRC. The wall is one for the in-bye, the first farmstead was proably
built around 1750 +/- 25 years. It wouldn't be a rash assumption that
the in-bye was enclosed about the same time.

As I said this is an old wall, 260 odd years old. Those stones have
had plenty of time to have moved the foot or so they have.

--
Cheers
Dave.