Season Finale; Lauro nears the end of the Iditarod, crossing 260 miles of ice along the Bering Sea coast to reach the finish line in Nome; Marty and his friend Dave haul supplies for a cabin into the backcountry, risking disaster on an unstable frozen river; Tom and Will build an elk hide tipi; Jake and his dogs chase a black bear into a remote mountain cave; and Paul and Chance construct a bear-proof log cabin chicken coop.
