In 1903, US President Theodore Roosevelt took a camping trip in California's Yosemite Valley with conservationist John Muir. Roosevelt famously loved the outdoors, but Muir had invited him for more than just camping: Yosemite was in...

Landforms are natural features on Earth's surface. They come in all shapes and sizes. In this video, learn about the different landforms found in the United States.

An explanation of the geological processes which lead to the formation of different types of rock. Earth Science - Geology - Learning Points. There are three types of rock: sedimentary, igneous and metamorphic. Sedimentary rock forms...

The video “National Parks” discusses how national parks were established and highlights six important national parks located in the American West.

When Joseph Walker passed through in 1833, there were none, but today, thousands of maps portray Yosemite National Park. From a land grant created during the Civil War, to modern computer mapping, these maps also tell the story of the...

This webinar focused on sharing information with park stakeholders about the Sugar Pine Bridge Hydrologic Study underway in Yosemite Valley. It was presented at the May 2017 stakeholder webinar.

In this video, a ranger describes easy hikes in Yosemite Valley to Bridalveil Fall, Mirror Lake, and Lower Yosemite Fall.

In this video, a ranger describes moderate hikes in Yosemite Valley, including, the Valley Loop Trail, the trail to the Vernal Fall Footbridge, and Columbia Rock.

Yosemite Falls is the tallest waterfall in North America, and is a powerful presence in Yosemite Valley. From winter ice to spring flood to autumn dryness, this magnificent waterfall is a dynamic force of nature.

Yosemite Falls is the tallest waterfall in North America, and is a powerful presence in Yosemite Valley. From winter ice to spring flood to autumn dryness, this magnificent waterfall is a dynamic force of nature.

Summertime visitors to Yosemite National Park miss many of the unique events of winter and early spring. Frazil ice flows are dramatic natural events that occur in the waterfalls of Yosemite Valley during March and April.

Summertime visitors to Yosemite National Park miss many of the unique events of winter and early spring. Frazil ice flows are dramatic natural events that occur in the waterfalls of Yosemite Valley during March and April.

This 15-minute video provides an orientation to visiting Yosemite National Park.

View this description of the Half Dome hike and how you can be best prepared to complete it (9:42).

Winter is a magical time to visit Yosemite, with opportunities for hiking, playing in the snow, and quiet solitude. The silence and beauty of Yosemite in winter is an unforgettable experience.

Every fall, students from surrounding Yosemite communities participate in Gateway Expressions, a youth art contest and exhibit at the Ansel Adams Gallery in Yosemite Valley. Gateway Expressions is one way that Yosemite is working toward...

Traffic, usually considered an urban problem, has been an issue at Yosemite National Park for a long time. While the park is sometimes shut down to all traffic because of forest fires, when it reopens, hundreds of cars come back to enjoy...

Since the glaciers retreated around 15,000 years ago, rock fall has been the major force of change in Yosemite Valley. Geologists work to understand this force of nature in order to protect the millions of visitors who come here each year.

There are over 3,000 meadows in Yosemite National Park, but they only cover 3% of the area of the park. They make up for this small percentage by providing habitat for a wide variety of plant and animal species.

People have enjoyed the tradition of camping in Yosemite for generations. However, getting a campsite in Yosemite is not always easy. Park Ranger Marea Ortiz gives an overview of what camping is like in Yosemite, and advice on how to get...

In this video, a ranger describes strenuous hikes in Yosemite Valley, including the Yosemite Falls Trail, Mist Trail to the top of Nevada Fall, and Panorama Trail.

Local American Indians, park fire managers, and blackberry weeders team up to save a meadow in danger of losing its unique native plants.