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.

Theodore Roosevelt once said, “There is a delight in the hardy life of the open. There are no words that can tell the hidden spirit of the wilderness, that can

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

Yosemite National Park’s superintendent Cicely Muldoon will retire next month, according to an internal email she sent to her staff on Jan. 13 and later shared with SFGATE via a spokesperson.

Kevin Costner is back on screen with the docuseries Yellowstone to Yosemite. He will explore Theodore Roosevelt's historic expedition in the iconic U.S. national park, renowned for its natural beauty.