As snow falls and Christmas lights glow in Jackson Hole, a holiday season of a different sort settles in just beyond the town, in the great winter world of Yellowstone. Breathtaking landscapes frame intimate scenes of wolves and coyotes, elk and bison, bears and otters as they make their way through their most challenging season of the year. Nature journeys in the footsteps of the men who first explored the park, and travels with their modern-day counterpart on his own journey of discovery. From the unique crystals of individual snowflakes to the grand sweep of Yellowstone's Hayden Valley, this is a Christmas like no other.

Sunday, 12/21/08 from 8-9 p.m. ET