Hitler's Last Secret

Plot:

Countless Nazi prisoners were forced to dig tunnels and chambers spanning kilometers in a remote region of Poland. Codenamed Riese, the network of mega bunkers was Nazi Germany's largest mining and construction project in both scale and theory. With excavation commencing in 1943, deep below Ksiaz Castle, we scrutinize its purpose as merely another of Hitler's headquarters, or if it was meant to house mysterious laboratories for the construction of the atomic bomb. Could Riese have changed the course of World War II?