NKVD special camp No. 48
The NKVD special camp No. 48 (also UMVD POW camp no. 48) was located in Cherntsy, Ivanovo Oblast. Russia. Initially it was established during World War II as a POW camp for most senior military commanders of the Axis powers. In German sources it is known as Kriegsgefangenenlager Woikowo, the latter location translated in English as Voikovo. Later it housed a secret Soviet biological weapons facility.
The location of the camp was a former Dedlov family manor, where the Soviets established a sanatorium for railroad workers named after Pyotr Voykov, known simply as Voykov sanatorium, hence the (corrupted) German name of the camp.