Experienced riders can also take the five-hour round-trip ride to Grizzly Giant, a 2,000-year-old redwood tree visited by President Theodore Roosevelt and naturalist John Muir in this same equine way.

Although coast redwoods are the tallest trees on earth, giant sequoias, their biological cousins, are the largest by volume, with bark that can be 2 feet thick and resistant to fire.

Saving the centuries-old trees in Yosemite's famed Mariposa Grove took hard work from firefighters but also half a century of intentional fires. May 16, 2025. contribute now.