Mount St. Helens, 3 years after eruption Click to zoom in Silver Lake Snow Snow-covered Mount Adams Snow Snow Swift Creek Reservoir Yale Lake Lake Merwin Columbia River Vancouver, Washington Portland, Oregon Scale This is called zero fill This is called zero fill Click to zoom out a Landsat image
22 May 1983, Landsat 4 MSS bands 4 2 1
1988 -- 1992 -- 1999 -- 1973 -- Map