3 ms·
> some of the images are positive and some are negative It depends on the color of the rock underneath. When white dust is blown on a dark surface one might ge
by fallinghawks 10y ago
> some of the images are positive and some are negative
It depends on the color of the rock underneath. When white dust is blown on a dark surface one might get the impression of a handprint rather than the outline.
- lisper 10y agoDoesn't seem plausible. Some of the positives are the same dark color as the halo on some of the negatives. The rock looks to me like its all the same tan color underneath. Also, take a look at the hires: https://upload.wikimedia.org/wikipedia/commons/f/f4/SantaCruz-CuevaManos-P2210651b.jpg https://upload.wikimedia.org/wikipedia/commons/f/f4/SantaCru... A the top center you will see a couple of positives that overlap each other. How did that happen?