I read a book about deaths in Yellowstone National Park years ago, and I'm thoroughly convinced that hot springs are the absolute worst way to die.
You're basically boiled alive. I remember one particular story where a guy's dog jumped out of his car and jumped into one of the hot springs. He jumped in to save the dog, and ended up getting third degree burns on the surface of 100% of his body. His eyes were white from being cooked, and when people tried to help him and take some of his clothes off and make him comfortable, his skin came off with it. If you go to that amazon link, it's the first story on the "look inside," at the start of Chapter 1.
I highly recommend the book. It's fascinating, if a little morbid, although the second half is a little more dull after they switch from deaths by nature to deaths by man (car accidents, murders, stuff like that). But lightning strikes, bears, bison, freezing to deaths, poisonous plants, 3 mysterious deaths from poisonous gasses, boiling hot springs, waterfalls sweeping people away, and deadly falls off cliffs... reading about all that definitely made childhood me more careful and respectful to that beautiful park.
Relative to those interests:
“Death in Yellowstone: Accidents and Foolhardiness in the First National Park”
https://www.amazon.com/Death-Yellowstone-Accidents-Foolhardiness-National-ebook/dp/B009R6HEF2