the spiral

<n>The Golden Spiral</n> by <n>Hannsjörg Voth</n> in Morocco, 1984. Photo by <n>Ingrid Amslinger</n>.

A sand spiral from yoga studio <n>Sweat & Soul Newburyport</n>.

<n>Gratitude</n>, a 2017 graphite drawing by artist <n>Anna D'Urbano</n>.

The <n>Montrose Spiral</n>, a prehistoric petroglyph in Alabama. Photo by <n>Alan Cressler</n>.

An <n>Ammonite</n> illustration by <n>James Sowerby</n> from *<n>Mineral Conchology of Great Britain</n>*, 1803.

The spiral pattern of an <n>Ammonite fossil</n>.

<n>Cephalopodes fossiles et vivants</n> from '<n>Les Mollusques Marins du Roussillon</n>' (1882) by <n>E. Bucquoy</n> and <n>Phillippe Dautzenberg</n>.

A <n>Rhinocochlis nasuta</n> snail in <n>Kinabalu Park</n>, Borneo, photographed by <n>Artour A.</n>