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Outback Photographics/Landscapes/Devils Marbles5

photoz.com.au

Flickriver: Photos from Redbank, Port Hedland, WA, Australia

flickriver.com

Hamelin Pool, Australia Earliest known life, as early as 3.5 billion years old. These are called stromatolites

Grand Hikes: Stromatolites in the Hakatai Shale

rockhounds.com