A pene enclave is one that is accessible only (or most easily) from
another country, but is physically connected to the motherland, even if
only by a point (as in Jungholz).
Thus Klein Wasertal was a pene enclave: part of Austria, but accessible
most easily (ie by road) only from Germany.
If you mean about St Martin that the western peninsula is separated by
the lagoon's channel with the sea (which has been bridged), then it is
stretching the definition a tad, as the channel looks to be straight and
thus artificial? Sort of like calling Greece a pene enclave because of
the Corinth Canal. One needs a better map...
For maps try omnimap.com, click on international maps, then Netherlands
Antilles.
Netherlands Antilles--Topographic Quadrangle Maps.
1985. Netherlands. These maps are a
more recent edition of the maps listed below. These are color copies of
some sort, although the quality is quite high. These have a bilingual
Dutch and English legends. Contour intervals are 10 meters. Universal
Transverse Mercator projection, International ellipsoid (WGS 84?). Sheet
sizes vary.
66-33864 Saint Martin. 1:25,000. 1 sheet, size 73 x 85 cm.
$35.00
St. Martin--Geologic Map. 1:50,000.
BRGM. 1989. One sheet with 59-page text. In French.
66-33937 Set, folded
$34.95
St. Martin & St. Barthelemy--Topographic
Map. 1:25,000. IGN (4608G), France.
The map includes information on trails, hikes, scenic routes, and more.
In French. 120 x 92 cm.
66-3394 1 sheet, folded
$ 9.95
Brendan