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U.S. Geological Survey
Photograph - Photograph
Crater Lake. Colored three-dimensional shaded-relief water depth map of Crater Lake, Oregon, which lies in a volcanic crater, or caldera. The map was created from over 50 million sonar depth readings. At 608 meters, this is the deepest US lake. North is at top. Land is grey, with water depth color-coded from pink (deepest), through blue, green and yellow to red (shallowest). Three volcanic cones are seen Wizard Island (grey, center left), Rhyodacite Dome (red, center left) and Merriam Cone (upper right). The caldera formed when the volcano Mount Mazama blew itself apart 7700 years ago. The lake water comes from rain and snow rather than rivers. Data collected from July 2000.
March 7th, 2013
Viewed 13 Times - Last Visitor from Redwood City, CA on 07/09/2014 at 12:35 PM
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