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<n>Richard Long</n>'s <n>Mud Painting</n> (1984). Photo by <n>Alfie Barton</n>.

A wild carrot (<n>Daucus carota</n>) flower displaying its natural geometric pattern. Photo by <n>Monique</n>.

Artwork by <n>David Herrerias</n> for the <n>Irkallian Oracle</n> album <n>Grave Ekstasis</n> (2013).

<n>Logarithmic Spirals of the Nautilus Shell</n>, a drawing by artist <n>Rafael Araujo</n>.

A <n>Spiral Petroglyph</n> carved into rock.

Illustration from <n>Monstrorum Historia Memorabilis</n> (1609) by <n>Johannes Schenk von Grafenberg</n>.

<n>Snake</n> graphic print pillow designed by <n>Alexander Girard</n> for <n>Vitra</n> in 1972.

The aquatic plant <n>Ludwigia sedioides</n>, also known as the mosaic flower.

A <n>Spiral Carved Stone</n> at the <n>White Spring</n> in <n>Glastonbury</n>.

A <n>Nautilus shell</n> photographed by <n>Tom Brakefield</n>.