I mentioned a couple of weeks ago that I've been busy blogging on my Mountains Rule Blog about my trip to Yellowstone National Park. I'm finally finished, so take a look if you are interested! These photos are just a sample of what you will see. Above is the Grand Pristmatic Spring, the third largest hot spring in the world measuring 370 feet in diameter. The colors come from pigmented bacteria in the microbial mats around the pool. The temperature averages 160 degrees F and discharges 560 gallons of water a minute. It's one of the most amazing things I've ever seen!