Chateau Blandy-les-Tours. Looking down 30 meters (100 feet), from main tower. In the center of the photo are steps from another tower, leading up to a dropoff of about 6 meters (20 feet).
In peaceful times, boards might have bridged the gap between the steps and the doorway in the side of the main tower.
To see the vantage point for the photo more easily, rotate it 90 degrees clockwise.