Fig. 1

a Death cell 601 in the present state, preserving the wartime characteristics. The dimensions of the cell are approximately 3.7 m × 1.9 m. The post-war plastered section of the northern wall is indicated by the ellipse. b Floor plan of cell 601. The walls are built of brick, on the eastern part of the cell the bricks are painted in yellow (dashed) and in the western part of the cell a layer of mortar has been applied on the bricks. The X marks the location of the post-war plaster covering inscriptions in the wall. b Close-up of the 45 cm × 60 cm post-war plastered section of the northern wall