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canvas prints american canvas prints bathymetry canvas prints caldera canvas prints crater lake canvas prints geography canvas prints geological survey canvas prints geology canvas prints horizontal canvas prints mount mazama canvas prints oregon canvas prints shaded-relief canvas prints sonar canvas prints three-dimensional canvas prints volcanic canvas prints volcanology canvas prints

photographs american photos bathymetry photos caldera photos crater lake photos geography photos geological survey photos geology photos horizontal photos mount mazama photos oregon photos shaded-relief photos sonar photos three-dimensional photos volcanic photos volcanology photos

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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.