My memory has played a bit of a trick on me. I have just looked at
the slide I made of the St. Martin stone, and it is the very same as
that on the picture at http://www.esj-
lille.fr/atelier/explo/EPOQUE/NEP_06.HTM . So it's not one of those
modern concrete ones. It is partly covered by a very decorative sort
of orange moss (well, I'm not very good at biology). It bears an
inscription, too: a very large number 262, above it the
word 'Pierre', and below it 'St. Martin' and the year '1858', the
year it was placed. So this is the boundary marker.

But what about the old stone at 1 m.? I'm not sure, but I can see on
my slide at approx. 1 m. of the stone a small metallic-like disc (or
something that looks like it). I am very cautious, but it could be
the old place of the stone. The thing I think is a disc is on top of
a rough piece of natural rock.

Anyway, I hope to post the picture within a week or so.

Peter S.