I’m no particular fan of any period of American history other than the Roaring Twenties, but even I know the broad strokes of the Lewis and Clark expedition. Ah, to venture into the great unknown-to-white-man! Ah, to journey alongside John Ordway and Patrick Gass! Ah, to name Old Faithful after the latter’s dependable flatulence!
Yes yes, I realize that the Lewis and Clark expedition skirted around Yellowstone by a hair. However! It was later “discovered” by John Colter, a member of the expedition who went on to become the first genuine mountain man. When he saw that there geyser, it reminded him of his old friend Patrick Gass, and thus a legend was born. And there’s no way to disprove that.