A photo from an aerial survey showing the upper parts of the landslide that occurred in northwest Washington state, near Oso, on March 22, 2014. USGS landslide specialists, in collaboration with seismologists and state agencies, are still working to interpret the complex sequence of events that led to the landslide. To get a perspective on the size of the landslide, look toward the bottom-left of this photo and you'll see, what appears to be, a tiny house just inside the tree line. You can read the latest updates on the science and how the USGS is contributing to the understanding of this event at on.doi.gov/OsoLandslide. Credit: Jonathan Godt, USGS.