Re: [OM] Advances in Technology

[dreammoose]

Most petroglyphs in North America were made by scraping away of the 
darker weathered/oxidized/whatever surface of light colored rock Even 
more archival than added material.
Moose

> > Might the future bring equal amazement with chemical films with their 
> > astonishing and beautiful balance of hues and character, [blah blah]
> Eh? I prefer the old image methods, ochre on rock. It's archival and cheap.
>
> tOM

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