Lidar base map shows North Fork of the Stillaguamish River and State Highway 530 just east of Oso, Washington. Colored areas indicate various Holocene landslides, "D" is oldest. Lower "A" is Skaglund Hill slide area (2006 and 2011). Upper "A" is Oso slide of 2014, red cross-hatching is approximate area of runout. Lidar shows topography after 2006 slide; red line with tick marks is approximate location of new headscarp. Terrace in the upper-left corner is Whitman Bench.

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