Aerial view of the earthen dam at Mount Polley Mine in British Columbia that  breached on August 4, 2014, sending contaminated water into nearby lakes.
Jesse Allen, using Landsat data from the U.S. Geological Survey. Caption by Adam Voiland.
<a rel="nofollow" class="external text" href="http://visibleearth.nasa.gov/view.php?id=84202">Visible Earth, NASA</a>