The Science Behind River Downcutting The water pressure of a river can cut deep into a riverbed. Sediments from the riverbed ...

At 8:32 a.m. on May 18, 1980, Mount St. Helens erupted with explosive force—the largest volcanic event in U.S. history. A 5.1-magnitude earthquake triggered a massive landslide that tore away the ...

Pull off at Height of Land for an easy walk to a stone rail and a panorama of lakes islands and distant mountains on the ...