Earth from Space: Spirit Lake, a heart-shaped lake formed by the massive eruption of Mount St. Helens

Spirit Lake is located about 3 miles (5 kilometers) north of the peak of Mount St. Helens and was altered by a record-breaking landslide during the volcano's 1980 eruption. (Photo credit: NASA/Landsat/Wanmei Liang) This stunning satellite image shows the unique…