THE DALLES -- Earthquakes shake the very foundation of the Pacific Northwest. A sudden movement of the Pacific seafloor 32 miles (52 kilometers) beneath south Puget Sound sends shock waves racing in all directions through our planet. It took only 40 seconds of surface vibration to cause 400 injuries and $2 billion in damages in western Washington and Oregon -- a stark reminder from the Earth of the primeval geologic motion that created the Pacific Northwest.

"The Big One: Earthquakes of the Pacific Northwest," a traveling exhibit designed by the Burke Museum of Natural and Cultural History/University of Washington will open Feb. 28 at the Columbia Gorge Discovery Center.