Nearly a dozen years since the wolves returned to Yellowstone, the recovery of that system to its natural balance is well underway.

Award-winning wildlife cinematographer Bob Landis discusses the making of the film.

A lone black wolf covets the daughter of the powerful patriarch of the Druid wolf pack.

Discover the epic history of the Druids, one of more than a dozen gray wolf packs now occupying the 2.2 million acres of Yellowstone National Park.

In the vast and complex kingdom of Yellowstone, two dominant predators reign supreme: the grizzly bear and the wolf.

Wolves from the Druid pack chase down an elk.

Learn about the various wolf packs of Yellowstone National Park.

Gray wolves are considered a "keystone" species -- one with a dramatic effect on its environment. For example, the recent reintroduction of gray wolves to Yellowstone National Park has led to the recovery of the entire ecosystem, from vegetation to beavers to hawks and eagles.

The original five members of the Druid Peak pack display early signs of the upheaval and drama that would eventually come to characterize the group.

Download gray wolf wallpaper for your desktop.