 bourtange (; gronings: boertang) is a village with a population of 430 in the municipality of vlagtwedde in the netherlands. it is situated in the region westerwolde in the east of the province of groningen near the german border. fort bourtange was built in 1593 during the dutch revolt and was used until 1851. the star fort was restored to its mid-18th-century state in 1960 and it is currently an open-air museum. == etymology == the name bourtange comes from the dutch word tange (sand ridge), because the settlement is situated on a strategically important sand ridge in the marshes of the bourtange moor. "bourtange (gemeente vlagtwedde)", monumenten in nederland. groningen, 1998/2010. retrieved on 19 january 2014. ==history== [[file:fortbourtange.jpg|thumb|bourtange fortification, restored to 
Former_municipalities_of_Groningen_(province) Populated_places_in_Groningen_(province) Vlagtwedde