Grand Canyon of the Yellowstone shared by @travelleisure says: ""Even in a state that's wall-to-wall with magnificent scenery, this site is a high point. The deep river gorge is a rumbling mass of natural beauty, with roaming wildlife (bison, elk, and even a grizzly crossing may make traffic come to a standstill), plunging waterfalls, and canyon walls made colorful by iron compounds."" on Postcard