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.
A good example of the trench a bison leaves when it swings its head back and forth to move snow out of the way when looking for something to eat. - February 07, 2011 - 1/320 sec at f / 5.6 - 300 mm - ISO 200 - 44°57'17" N 110°30'21" W