Komplexlager 12 Halberstadt, Underground bunker complex in Thekenbergen, Germany.
Komplexlager 12 Halberstadt is an underground bunker complex with tunnels and storage chambers beneath the mountains. The facility extends over several kilometers with reinforced passages and sealed compartments throughout.
The complex was built between 1944 and 1945 under the codename Malachit to produce aircraft engines. After the war it transitioned to military storage use during the Cold War period.
The site functions today as a memorial space documenting how it served different purposes across generations. Visitors encounter exhibits that reflect on these transformations and their impact on the region.
The complex is accessible during summer months with scheduled group tours that explain different sections. Wear sturdy shoes as you will walk through uneven underground passages.
After German reunification the site stored roughly 620 million defunct East German banknotes awaiting destruction. This unusual role represents a little-known chapter in the facility's later years.
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