Tuesday, November 12, 2019

The ghosts of the past seen on the pathways in a dust of snow or...

Maybe someday this technology can be applied to rock pile sites.
https://phys.org/news/2019-11-ghost-footprints-pleistocene-era-revealed.html

I wrote a post somewhere about seeing the ghosts of people walking on the old paths, visible only when there is a dust of snow. Cannot find the post.

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