Yellowstone National Park is one of the most wild places on earth. It is home to a majority of the world’s geothermal features, and is a place of extremes. Apex predators and specialized thermophilic species alike reside within her boundaries. I had the pleasure of backpacking within Yellowstone and the Tetons during midwinter, an experience that very few people ever have. Here are a few of the images from that trip.