We went exploring small hot springs on the way but the Grand Prismatic Spring was the biggest and most famous hot spring at Yellowstone.
It was also my favorite, but the most scary for my daughter. She cried wanting to go home and hardly could past through the boardwalk through the big hot spring because it was too scary for her with lots of smoke and boiling water, lol.
Please see the videos below:
And last but not least…video 10: