"außenlager unterlüß-altensothrieth" (tannenberglager) east of bergen was in use from late august 1944 to april 13, 1945. it was located at unterlüß, where the rheinmetall-borsig ag had a large test site. up to 900 female polish, hungarian, romanian, yugoslavian and czech jews had to clear forest, do construction work or work in munitions production.