Executions in the Valley of Death

The Executions in the Valley of Death were a series of mass executions carried out by German occupiers in a valley near the town of Fordon (now a district of Bydgoszcz). In this location – later called the Valley of Death – paramilitary members of the Volksdeutscher Selbstschutz and officers of the Einsatzgruppen murdered between 1,200 and 3,000 residents of Bydgoszcz and nearby localities in the autumn of 1939.

Source: Wikipedia — Executions in the Valley of Death (CC BY-SA 4.0)