Two things about this article registered on my bogometer: 1. In the image of the hands on the cave wall, some of the images are positive and some are negative. The negatives were plausibly made by the technique described in the article (put hand on wall, blow dust at wall) but the positive images could not possibly have been made that way. 2. The translations of the tablets seem implausibly precise. How could we poss…
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.