We spent the day in the hydrothermal basin of Yellowstone today. They have redone the Old Faithful visitor center and the exhibits all about geysers, mud pots, hot springs and a bunch of other thermal features are fantastic. We have been here before but I didn’t remember a lot of it so it is like new. Great colors and wonderful sights and sounds. The smells are not so great but hey, they come with the territory! I think the sounds are really my favorite. The springs and mud pots bubble and burble at your feet. The colors are pretty cool too. They are caused by mineral deposits and lots of different kinds of bacteria and stuff that grows in the warm water. It is like no other place in the world, pretty cool.