Mentioned by Montana 12 days itinerary
The Perfect 12-Day Road Trip Itinerary for Montana, Wyoming, and the Dakotas
"On your way north, you can visit a couple of the viewpoints you missed yesterday, like Snake River Overlook (made famous by photographer Ansel Adams). Further north, Oxbow Bend and Willow Flats are also worth a stop, and are spots where you may be able to see wildlife like moose and bear."