Kevin Costner retraces the steps of the Hayden expedition as he explores the wildest terrain of Yellowstone National Park.

Kevin Costner takes a deep dive into the 10,000-year human history of Yellowstone.

Kevin Costner explores the park in the dead of winter, battling fifteen feet of snow and negative 40-degree temperatures.

As the snow melts, millions of animals return to the park, but this year they're accompanied by a flood of biblical proportions.