Streaming · Trailer · Official

In the Valley of the Wolves (2010)

NATURE | In the Valley of the Wolves | Web Exclusive | PBS

In 1995, the first gray wolves were transported from Alberta, Canada to Yellowstone National Park, to repopulate the sprawling landscape with the species, absent for more than 70 years. The following year, a second wave of wolves was brought to the park from British Columbia, Canada; five of them were released together...