The Greater Yellowstone Ecosystem or GYE is the largest tract of intact ecosystem in the lower 48. It is more than just Yellowstone (at 2.2 million acres) and Grand Teton National Park (310,000 acres) but also includes 6 National Forests, 5 National Wildlife Refuges, and large expanses of rural public and private land. At 22 million acres, you can spend a lifetime exploring this region…let us be your guide!
