Dry Falls
This lake is one of a number of plunge pools left behind when Glacial Lake
Missoula's debris-clogged waters rushed over the rocky precipice known today as
Dry Falls. Picture floodwaters more than 250 feet deep pouring over a falls
five times wider than Niagara, and you get an idea of the immensity of the
flood. Note the huge, water-carved potholes known as "kolks" (at right in
image).