This was taken a few days after a 10 inch snow fall. The pool had the best color I have every seen. The colors come from algae and lichen. Different areas of pools and geysers maintain near constant temperatures. Different color algae and lichen grow at these different temperatures.
Taken in Yellowstone National Park, Wyoming, U.S.A. Made from 2 photos. (CRW05936-37)
#9 on Explorer's Most Interesting on 1/20/06.