In a forest nearby Roznowice, about fourty kilometres northwest of Poznan, the Nazis in October and November 1939 buried about 1000 patients from the mental hospital in Owinska. The bodies of the patients were buried in mass graves and had either been murdered in a provisional gas chamber set up in the 7th fort in Poznan or taken directly from the mental hospital to Roznowice and shot. Responsible for the murders was a command called Sonderkommando Lange. Kommando Lange had the task of killing handicapped people in all mental hospitals in Wartheland (occupied area in western Poland). Patients were either murdered in the seventh fort’s gas chamber, gas wagon, (mobile gas chamber) or shot in Roznowice.

Current status: Monument (2015).

Location: 52°42'24.78"N 16°50'53.32"E

Get there: Car.

My comment:

An outdoor museum where graves and monuments are complemented by information boards. Its location far from the nearest road makes it quiet and peaceful to visit.

Follow up in books: Friedlander, Henry: The Origins of Nazi Genocide – From euthanasia to the final solution (1995).