Yellowstone National Park is an amazing place. I think you could spend a summer there and not see everything.
One of the things that surprised me was the amount of geothermal features, there must be thousands. It’s so impressive.
Here is a video and a few pics from our visit last summer.
This is in the Upper Geyser Basin
Don’t remember the name of this hot spring, but it’s pretty
Morning Glory Hot Spring
Mammoth Hot Springs Terraces
This picture I took in late May of Yellowstone Lake looked like something from a postcard to me. Interestingly enough, there were some geothermal features nearby and even under the water where this picture was taken. These pictures were all taken in the West Thumb Geyser Basin. The elk in the last picture below was just hanging out wandering between all the features just like another tourist. rk
Geysers under the water near the shoreline of Yellowstone Lake
Black Pool in the West Thumb Geyser Basin
Another hot spring (I missed the name of this one)
Elk hanging out in the West Thumb Geyser Basin