What Lies Beneath–Crater Lake
Back in 1886, a USGS scientist named Clarence Dutton led the first expedition to determine the depth of Crater Lake in Oregon using a rowboat, a lead weight, and a piano wire.
For more than 100 years since, scientists have continued to marvel at the mysteries beneath the surface of the deepest lake in the U.S.
New bathymetric mapping, combined with decades of past research, now provides the clearest picture yet of events that happened since the massive eruption 7,700 years ago that destroyed Mount Mazama and created Crater Lake.
To view additional information and photographs, visit http://wrgis.wr.usgs.gov/fact-sheet/fs092-02/.