A significant point of the Atlantic Wall can also be found in the dunes of the Wassenaarse Slag. It was an ideal point from which to control several kilometres of beach using flanking fire from anti-tank weapons and heavy machine guns. Searchlights, flamethrowers and mortars were employed and deployed from this location. The weapons were housed in underground bunkers made of reinforced concrete which were connected to a command post, ammunitions stores, barracks and other spaces - around 20 buildings in total - via tunnels and covered trenches.
Today, these shelters are very important to bats and the complex has been declared a bat nature reserve. At least 5 species of bat hibernate here, including the rare Pond bat. The bats also use the space for mating in late autumn and early spring so it is paramount that the bunker remains undisturbed during these periods. The bunker is usually closed to the public for this reason, but an exception has been made and guided tours are available on Bunkerdag.
You can plan your own visit to this bunker but there will be tour guides and volunteers available to explain about both the bunker and the bats.
Please note that the bunker is not accessible for wheelchairs or buggies.