I found this little map, that, as far as I can see, depicts the
enclave maybe not entirely correctly (it is just a little route
description), but a lot better than the Dutch topo map. It is the
spot that is called "Niemandsland" (No Man's Land - which refers to
the article, where it is said that it is no longer that).
http://www.trouw.com/natuurtochten/popup/fietstochten/baarlenassau.htm
l
Peter S.