Started out in Bozeman, stayed a first night in Mammoth Hot Springs, stayed several days around Old Faithful, and then back to the Mammoth Hot Springs area for the Wolf Discovery tour.
Just one small area with no snow on it and these bison had found it. - February 06, 2011 - 1/200 sec at f / 7.1 - 62 mm - ISO 400 - 44°39'3" N 110°48'7" W