Oso Landslide (IMAGE) Oregon State University Caption This massive landslide near Oso, Wash., in March, 2014, killed 43 people and was one of the most deadly in US history. Credit (Photo by Johathan Godt, courtesy of U.S. Geological Survey) Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.