Tourists flock to Yellowstone for the views . . . . Equally astounding is the park's vast array of geothermal features. 'Paint pots' of burbling mud spray red, white and other vibrant tints across a geological artist's palette.
Alexandra Witze & Jeff Kanipe, Island on Fire: The Extraordinary Story of a Forgotten Volcano That Changed the World (New York: Island Books, 2015), ch. 3, p. 61, Kindle loc 685