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World’s Oldest Optical Illusion Found?

Mar 26, 2010
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Just browsing and i found something that interesting.

The paper’s author, Duncan Caldwell has surveyed the Paleolithic art of several caves in France and discovered a recurring

theme that he says can’t be simply accidental. Throughout the cave of Font-de-Gaume,

and in examples from other sites as well, drawings and engravings of woolly

mammoths and bison often share certain lines or other features, creating

overlapping images that can be read first as one animal, then the other. Rarely,

if ever, do they do the same with other animals.

While images of horses, deer, extinct cattle, and even

rhinos often appear in such caves, and often partially or entirely overlap each

other, it is only the mammoth-bison pair that Caldwell found regularly

appearing superimposed so exactly. For example in the modern drawing below of

an image from Font-de-Gaume, one main body shape, underbelly, and set of legs

is adorned with signs of both mammoth and bison heads at both ends. These two large,

bulbous, “armor-headed herbivores” which share many physical similarities in

life, seem to have had some connection for people in this region in art as


Early cave art researcher Henri Breuil copied this image of overlapping bison and mammoth from the walls of Font-de-Gaume in France.

A classic version of the duck-rabbit
read the article
Sep 21, 2011
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Artistic representation of perceptual illusion.
That's interesting.
Although I don't think it has anything to do with the gestalten duck-rabbit.