Damaged point indicator from the crossing loop, taken out by a derailed PN grain

Damaged point indicator from the crossing loop, taken out by a derailed PN grain
View full size photo (1024px by 683px)

Taken with a Canon EOS 50D
Date: July 12, 2010 10:44 AM
Exposure Time: 1/400 sec
Aperture Value: f/11
Focal Length: 30 mm