Ko te raorao o te mate (Polish: Dolina śmierci) i Fordon, Bydgoszcz, raki o Poland, he waahi kohuru nui a te Tiamana Nazi i mahia i te timatanga o te Pakanga Tuarua o te Ao me te urupa nui o te 1,200 <unk> 1,400 Poles me nga Hurai i kohurutia i te Oketopa me te Noema 1939 e te Tiamana o te rohe "Selbstschutz" me te Gestapo. Ko nga kohuru he waahanga o te Intelligenzaktion i Pomerania, he mahi Nazi e whai ana ki te whakakore i te maatauranga Polani i Reichsgau Danzig-West Prussia, i uru atu ki te Pomeranian Voivodeship ("Polish Corridor"). He wāhanga tēnei o tētahi mahi whakamomori nui ake i puta i te katoa o te whenua o Pori i nohoia e Tiamana
, te ingoa waehere Operation Tannenberg.