Re: Snaps

This is going to sound flip, but write it on the wall of a cave.

Much of the cave art is at least that old--it was done with some simple 
material which stains the rock (ground hematite/chalk/charcoal etc.)
and done in an inaccessible place with controlled temperature and 
humidity conditions, to minimize weathering.

Now exactly how you are going to paint emulsion on a cave wall, and what 
it should consist of, and how to expose it--well, that's up to you. 
Maybe stencil it with a screenprint technique...

howard wrote:
> Can't think of an appropriate Ng, so here goes...
>
> How do I make a photographic image last a very long time ? I
> mean a *VERY* long time. I'm talking 5,000 - 20,000 years !
>
> Not digitised but as a viewable image, or negative/slide/print.
>
> Sealed in glass, in a vacuum ??  Laser burn, or etch the image
> granite or carbon? Or natures way, in amber. ?
>
>
> Hmmmm ??
>
>
> Howard.


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