I entered the Snark hunting grounds in December 2008. http://www.artandpopularculture.com/User:Goetzkluge could give you an idea where I was in 2010.
The image shows illustrations by Henry Holiday (from The Hunting of the Snark, 1876) and Marcus Gheeraerts the Elder (Allegory of Iconoclasts, aka The Image Breakers, around 1567): In the “mouth” of Gheeraerts’ “head” a praying priest is depicted. The shape of the priest also is visible in the “mouth” of Holiday’s vanishing “Baker”.
There is more — with acknowledgments to Mahendra Singh, to John Tufail and to the Internet.
And there are more big heads.
2017-08-28, updated: 2021-05-02