This vivid, mesmerizing pattern was formed by the turquoise water of melting glaciers as they ran over the rocks in the bottom of a stream. Reflected on the surface of the water are the golds of the fall aspen and the cobalt of the sky; the submerged stones add yellows, rusts, and deep maroons. Just as complex mathematical systems come together in an algorithm, shapes and colors combine here to form an intriguing natural kaleidoscope.