I think we could have spent the entire week at Yellowstone and not seen everything. The first day saw limited visibility due to smoke from fires in CA and within Yellowstone itself. In fact, there were two roads closed due to wildfires. Still, the park was amazingly beautiful, and I’m sure we will be back again.
We spent part of the first day exploring the volcanic part of the park. We saw steam vents, geysers, boiling springs, boiling mud pots, and all kinds of things that you don’t see anywhere else. One of the things that surprised me was the life found everywhere. Even places where you would think nothing could survive have plants around them and microbes living around the edges.