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.
Solitary Geyser Old Faithful Area, Yellowstone National Park, Wyoming
I like how much more snow is still on the trees near the geyser. - February 03, 2011 - 1/1250 sec at f / 8.0 - 12 mm - ISO 320 - 44°28'6" N 110°49'45" W