Antelope Flats makes up a significant chunk of the preserved valley, a vast expanse of sagebrush stretching from the Gros Ventre River, north to the Snake River Overlook. Interrupted only by Blacktail Butte, the immense open flats are a haven for quite a bit of wildlife, including elk, bison, moose, and especially the threatened sage grouse. With dramatic wildflower blooms each spring, the area is also home to the world-famous Moulton Barns, the two most photographed barns in the world. It’s also a favorite destination for stargazing, thanks to its endless horizons and minimal light pollution.