Death Valley 2022/23

[Beardilocks]

Correct.  Picto is made with pigment, petro is made by chipping.  There are significantly less pictographs in DV than petros. 

I tend to use “rock alignment” as a blanket term for all forms made on the ground, whether you’re adding or subtracting rocks/gravel to make a design.  But yes, technically rock alignments are when you add rocks and intaglios are when you move gravel to make a shape.  I believe geoglyph is the proper blanket term, being separated into negative & positive versions. 

DStretch uses any photo in any format.  I’ve not dug in deep enough to see if any formats produce better results than others.

I have yet to uncover any petroglyphs actually in Corridor canyon itself.  But I have found a few cowboy signatures.