Hollywood legend Kevin Costner ruminates on President Teddy Roosevelt in the new Fox Nation limited series 'Yellowstone to Yosemite.'

In the first teaser shown to press for the upcoming Fox Nation project, titled Yellowstone to Yosemite with Kevin Costner, the former Yellowstone actor is seen mumbling to himself while hiking around the picturesque wilderness.

Kevin Costner is taking a brief detour from “Horizon” for the new docuseries “Yellowstone to Yosemite with Kevin Costner.”

A documentary series premiering on Fox Nation this Saturday explores connections between two of the first national parks, and it follows up

Kevin Costner will soon be back on television screens in a new Yellowstone project. No, Costner is not reprising his role as John Dutton in a “Yellowstone” prequel or spinoff from Taylor Sheridan. Instead, he’s hosting a three-part limited docuseries about Yellowstone National Park.

The three-part limited series is a sequel to Costner's previous collaboration with Fox Nation, Yellowstone: One Fifty. The show is set to debut on Saturday, Feb. 8, and it will serve to launch the steaming platform’s year-long America 250 campaign, which celebrates the country’s upcoming 250th anniversary in 2026.

Kevin Costner is hosting a new documentary, Yellowstone to Yosemite, so here’s where to watch it and when it’s on.

Costner's journey follows the 1903 Yosemite expedition of president Theodore Roosevelt and naturalist John Muir

The actor hosts a three-part documentary on FOX Nation about Yosemite National Park and a legendary camping trip there in 1903, when naturalist John Muir lobbied the president to better protect the nation’s natural wonders.

The newest documentary series from Fox Nation features actor Kevin Costner on a journey into some of the nation’s most beautiful national parks, as well as one former U.S. president’s mission to preserve the country’s frontier.