Fun Facts Fun Fact: How Hot Old Faithful Water Is Posted by Adam (Neko Random) on September 5, 2023August 5, 2023 When Old Faithful erupts, the groundwater underneath it can become as hot as 244° F but does not transform into gas but stays a superheated liquid. Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like this:Like Loading... Related
That’s hot!