Explore the Scablands

  • By Peter Tyson
  • Posted 09.20.05
  • NOVA

"It was the biggest flood in the world for which there is geological evidence," writes Norman Maclean in A River Runs Through It, referring to the catastrophic deluge that tore through the Pacific Northwest every time Glacial Lake Missoula's ice dam gave way. "[I]t was so vast a geological event that the mind of man could only conceive of it but could not prove it until photographs could be taken from Earth satellites." Proof now in hand, geologists today point to numerous features in the landscape that reveal the extreme scale and violence involved in these truly colossal floods. In this interactive map of the vast region affected, both within the storied Channeled Scabland and beyond, take a look at some of these telling features.

Launch Interactive Printable Version

Using this photo-illustrated map of the Pacific Northwest, examine evidence left by violent Ice Age floods.

This feature originally appeared on the site for the NOVA program Mystery of the Megaflood.


All Photos

© Mark Alan Wilson/picturetomorrow.org

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