Medium: Acrylics on card/digital
c. 3.49 billion years ago, Pilbara region, Western Australia.
A shallow bay at low tide, just under 3.5 billion years ago. Over many decades, the actions of tiny cyanobacteria have created clusters of large dome-shaped stromatolites that represent the earliest macroscopic structures to be created by life. Today, this part of the world lies far from the sea, at a remote site in the dry Eastern Pilbara, somewhat inappropriately called "North Pole".
This image was created for the "The Big Picture Book" (Allen & Unwin, 2005)