This is another image from the last couple of days before Yellowstone closed for the season. The road from Gardiner, Montana to Mammoth Hot Springs and out through Lamar Valley to Cooke City is open year round but all interior roads, including those to Canyon, Old Faithful, and Yellowstone Lake, are all closed to vehicles until spring. A lot of Yellowstone above about 7,500 feet had snow on the ground but the west part of the park was mostly snow free, though that has likely changed over the past several days. Even though there was no snow where this bison was hanging out, it was still cold, about 20 degrees Fahrenheit. That, along with the fog, left many of the bison sporting a little frost on them.