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.
Snowmobile Roadwork Old Faithful Area, Yellowstone National Park, Wyoming
I guess this snowmobile was draking a lot of snow to help smooth out the road. - February 06, 2011 - 1/400 sec at f / 10 - 35 mm - ISO 200 - 44°27'22" N 110°49'47" W