Yellowstone National Park, Kepler Cascade (sic) (Wyoming, USA)
Unused Haynes real-photo card 23443 with minor age foxing on the reverse. Wikipedia tells us that “Kepler Cascades is a waterfall on the Firehole River … approximately 2.5 miles south of Old Faithful. The cascades drop approximately 150 feet over multiple drops. The longest drop is 50 feet.” Grade: 2