2012
Image credit: A. Wing
Stromatolites and ooid sands at Highborne Cay - Image source: R. Summons
Icicles, Yoho National Park, British Columbia, Canada - Image source: wallpaper-s.org
Mt Baker - Image source: A. Donohoe
Image source: A. Donohoe
Shark Bay Stromatolites - Image credit: P. Cohen
Image credit: www.spectrumtextures.com