The Boiling River is created where a large hot spring enters the Gardner River, allowing the hot and cool waters to mix into a temperature comfortable enough to bathe in. The natural hot tub makes a great place to stop and relax while soaking in the warm water and soaking up the natural beauty of Yellowstone.
Allot some time on your next Yellowstone National Park trip to take a dip in the Boiling River! You'll find this must-stop spot just south of the 45th Parallel Bridge, located in the Mammoth area of the park (so you should probably take a pit stop and snap a pic there too!).