This is a detail of the blade on a snow plow used to clear train tracks on mountain passes. It would not look out of place in a Giger painting or a Saw movie.
Camera: Nikon D100
Lens: AF Nikkor 24-85mm f/2.8-4D IF (my workhorse)
Exposure: ISO 200, 80mm @ f/5.6 @ 1/125s, handheld, RAW
Lighting: Daylight, Auto WB.
Location: Museum of Transportation, St. Louis, MO GPSProcessing: Lightroom 3