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Petroglyphs: Petrified Forest National Park

What are Petroglyphs?

More petroglyphs can be found at the Puerco Indian Ruin in the central portion of the park.

See the striking large wading bird--an avocet, perhaps--pictured just to the left of center. It is not known whether the artist depicted a frog, or a person, in the bird's mouth.
This information is from: http://www.shannontech.com/ParkVision/PetForest/PetForest2.html

 

The Park Ranger showed us this amazing solar calendar used to signal to the indians the exact date to begin planging their crops in the very short planting season in this arid environment. You see the cleft in the two large rock to the left, the smaller part to the far left where the cluster of grass is sticking out. The second week of June every year a shaft of light coming from that cleft strikes a petroglyph on the dark rock to the right. Below you can see the rock with that petroglyph.

The solar calendar petroglyph that the shaft of sunlingt strikes is that round symbol that looks like this: @. It is a little less than halfway from the left margin of this photo.

 

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