Before embarking for the USA, I was happy to note that we had a few days planned at the Yellowstone. Thanks to Bill Bryson, I thought I had a feel of what Yellowstone is all about. The Yellowstone is what the books say, but yet so much more. The breathtaking beauty of the snow, hot springs, canyons, snowcapped mountain peaks, animals, rivers, falls, trails, - all rolled into one, seamlessly merging into each other - for thousands and thousands of unending square miles is something that can be imagined only when seen. One would need to be armed with the power of imagination of the Almighty to be able to conjure the landscape of Yellowstone by simply reading a passage in a book. Yellowstone has been a geological hotbed for millions of years. It has an extensive history of volcanic activity, which can explain the thousands of small and large hot springs and geysers, resulting in the ice-cold Yellowstone river upstream rising in temperature as we move downstream to nice lukewarm to scald...