The Colored Pebbles of Lake McDonald

(via Amusing Planet) The Glacier National Park is home to more than 700 lakes.  One of the most striking feature of some of these lakes is the presence of a variety of colored rocks and pebbles just below the water and on the shores. Lake McDonald is the largest of the lakes with a surface area of 6,823 acres. It is also the longest, at over 15 km, as well as the deepest lake at 141 meters.