A more or less daily photoblog with favorites of my photographs. Subjects are typically nature, landscape, astrophotos, existing light.
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Friday, December 21, 2007
Puerco Pueblo Petroglyphs
The Puerco Pueblo in the Painted Desert/Petrified Forest National Park is a site of ancient ruins as well as a large collection of Petroglyphs including these. If you examine the petroglyphs on this rock, most of them are vertical, however, just below the light layer in the rock is a four legged creature which is angled perpendicular to the natural layering in the rock, suggesting that it predates the other petroglyphs to a time when the rock sat with the layering parallel to the ground. This image was taken at 133mm focal length with an exposure of 1/250 seconds at f/8, ISO 400.