Until 1989 or so, there was an area along the French German border
between Saarbruecken, close to Karlsruhe, north of the French town of
Wissenbourg called the Mundatwald. It remained under temporary French
government administration because it formed the watershed for
Wissenbourg. Helmuth Kohl, right at the time of the German
unification, announced on TV that Germany was giving the area to
France.

I'm trying to determine what original document allowed this piece of
Germany to remain under French jurisdiction and I'd like to get a copy
of the treaty in which Germany ceded it.

I was there in 1986 as a civilian employee of the US government (the
US had a military base on the top of the mountain at the north tip of
the forest - whose southern perimeter was, for 200 meters or so, the
fence that lined the administrative border. The soldiers had actually
built a staircase over the fence so they could patrol the side under
French administration. When they crossed the fence, they were still
in Germany, and had the right to go there at the time.

I'll post a map of the good map that I have of the place as soon as I
locate it.

Can anyone help?

Thanks

Len Nadybal