Photographer and writer Tom Murphy reveals the supplies and gear that are necessary to survive winter in Yellowstone. Join NATURE for a breathtaking look at wintertime deep within America’s first national park.

Christmas in Yellowstone airs on PBS Sunday, December 20, 2009 at 8pm (check local listings) and is part of the 28th season of the Peabody and Emmy award-winning series produced by Thirteen in association with WNET.ORG for PBS. Major support provided by Canon U.S.A. Inc. For more information, visit the PBS Web site and watch the preview