Yesterday, December 15th, roads in the interior of Yellowstone opened to oversnow vehicles. Access to the Old Faithful and Grand Canyon of the Yellowstone areas are now accessible via guided snowcoach and snowmobile tours through early March. The road from Mammoth Hot Springs through to Cooke City, Montana is open to vehicles year round. As late as last week, we actually had no snow on the ground but a snow storm came in that lasted several days and now we are a winter wonderland right on time for the winter season of Yellowstone. The image above was taken several years ago in February in Yellowstone’s northern range. A huge herd of migrating bison were on the move from the Blacktail Plateau area towards Lamar Valley. They stretched out over several miles. I leaned out the car window to get this shot. Even at f16, at 500mm, getting much depth of field was impossible. If you’ve been in the visitor center bookstore at Old Faithful, you’ve seen this image covering the wall behind the cashiers.