Burgess Shale site, satellite image. North is at top. Forested areas are green, mountain tops are brown and grey with white snow and ice, and lakes ar
Burgess Shale site, satellite image. North is at top. Forested areas are green, mountain tops are brown and grey with white snow and ice, and lakes are blue. This area of Yoho National Park, Canada, centres on Walcott Quarry, the site of the Burgess Shale fossils, which is just above centre, east of Emerald Lake (light blue). Discovered in 1909 by Charles D. Walcott, the fossils preserved here record the Cambrian Explosion some 500 million years ago, when an unprecedented period of evolution took place. It is now a UNESCO World Heritage Site. This image, which covers an area around 72 kilometres across, was obtained on 29 August 2001, by the Advanced Land Imager (ALI) on NASA's Earth Observing-1 (EO-1) satellite.
Size: 4800px × 4800px
Photo credit: © NASA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
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