AMP: 0 Location: Canyon St and Firehole Ave, W. Yellowstone Reassurance shield after the junction AMP: 0 Location: Canyon St and Yellowstone Ave, W. Yellowstone Turn left here for the three routes into Yellowstone. AMP: 0 Location: Yellowstone Ave at Yellowstone National Park, W. Yellowstone The routes end here at the entrance to Yellowstone. All … Continue reading U.S. Route 20, US-191/US-287 to Yellowstone National Park (TO US-14/US-16/US-89/US-191/US-212/US-287)