Can you see what is in this image?

What do you see in this image?

From The Ape That Spoke : Language and the Evolution of the Human Mind, by John McCrone.

At first sight this is an unintelligible jumble of lines, but when told what the picture represents, most people find it clicks into place with almost photographic reality. The brain supplies the missing information to flesh out the raw image.

See page 66 for the answer.

[Via Futility Closet]

Previously:
Look at this optical illusion disc at New York's Little Island
Mr Angry and Mrs Calm optical illusion
Take a seat before checking out this optical illusion
I couldn't figure out this optical illusion painting until the very end
Fantastic physical model of famous optical illusion melted my mind
Optical illusion: impossible anti-grav ramps
Watch this fantastic 'Circle in Circle' optical illusion machine in action