This map and animation show the bottom of Crater Lake.
Further information about Crater Lake bathymetry can be found at this website, "2000 Multibeam sonar survey of Crater Lake, Oregon - Data, GIS, images, and movies".
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"Fly-by of shaded-relief bathymetry and surrounding mountains of Crater Lake Oregon. The colored region is the lake floor whereas the gray region shows the surrounding mountains. The lake is approximately 9-km wide east to west. The flight approaches from the south, flies around the lake floor in a clockwise direction, passes over Wizard Island, Merriam Cone, the deep East Basin, the Central Platform, and Rhyodacite Dome." From pubs.usgs.gov/dds/dds-72/site/flyby.htm
Last updated: February 28, 2015