Every fall, two of Yellowstone’s nine main elk herds move from their summer range in Yellowstone National Park to their winter range outside of the Park. Both herds need to cross U.S. Highway 20 - one of the busiest thoroughfares to Yellowstone - through Island Park, Idaho, to get there.
A stunning transformation is beginning to sweep over the Greater Yellowstone Ecosystem (GYE). For months, our great herds of elk, deer, pronghorn, moose, bison, and bighorn sheep have taken shelter in valleys, retreating from the snow covered mountains. Now, the melting snow exposes hints of green grasses as the region begins to awaken from winters slumber. This is what the herds have been waiting for.