Bunker WN 90 by , KilroyTrip 155 See on map A 50mm KwK cannon covered the two beaches of the WN 90 known as "La Dune." A 50mm KwK cannon covered the two beaches of the WN 90 known as La Dune. Read Route Tags : bunker murdelatlantique blockhaus gefosse-fortenay wn90 calvados normandie todt atlanticwall bataille-de-normandie secteur-us