It was 5 years ago that we visited YNP.  This park is very large and has a big variety of spectacular natural features to visit.  Two years ago at about this time, we took the opportunity to visit Mammoth Hot Springs, which is in the northernmost part of YNP.

https://coopsecondact.com/2015/08/22/yellowstone-national-park/

https://coopsecondact.com/2018/08/01/bozeman-mt/