Evidence that fence and vent marks were drawn on airphotos, and holes were made in alleged gas chamber roofs, to support massgassing claims.

1944 air photos and 1993 camp visit show:
1. 'Smoking Gun' proves photos altered:
Marks on one air photo looking like groups of inmates overlap a rooftop, proving they were drawn on the photo.

2. Fence-Like Lines Appear and Disappear and Change Locations:
May, '44 air photos have thick fence-like lines around only one cremationbuilding. July photos have no lines. Whereas on August and September photos,thick lines in different locations from May photos, surround both cremationbuildings. This strongly indicates the lines were drawn on the photos.

Three other clues strongly suggest the lines were drawn on the photos:
1. there are no visible shadows, which any object over .6m (2ft.) highwould produce on the air photos,
2. under optical equipment which produce 3-D images, the lines displayno height,
3. inspection of the camp in 1993 showed no fence foundations, or rootsfrom previous shrubs, existed at these locations.

3. Roof Marks Change Locations, and Holes Smashed Through Roof:
Marks on the two alleged gas chamber roofs are in different locationson the May, July, August, and September air photos, showing they were almostcertainly drawn on the photos.

The 1993 inspection of one of the two alleged gas chamber roofs showedno holes existed at the location of marks on 1944 air photos, and two holeswere smashed through the cement roof after September, 1944.