The stillness of this Landsat image belies such destructive potential. The glacier appears light blue where it is swept clean of snow, but white where covered (top of image). The southern reaches of the great glacier inch southward from Skaftafell National Park and out toward the Atlantic Coast. The glacial tongues that drain the glacier are light blue, and are scalloped by grayish moraines, which are deposits of glacial till (rock debris ground up and carried along by the glacier). Scrubby vegetation over hard, volcanic rock is red.