The Yosemite Conservancy blog. An insider's look at what's happening in the park — and how our donors are making a difference.

Field Notes

The Yosemite Conservancy blog.
An insider's look at what's happening in the park — and how our donors are making a difference.

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Ranger-naturalist Walter Heil with a Junior Nature School group in Yosemite Valley, circa 1938. Photo by Ralph H. Anderson, courtesy of NPS Harpers Ferry Center Historic Photos Collection.

In 1925, after spending nearly two months studying and exploring the Sierra, 20 aspiring naturalists became the inaugural graduating class of the Yosemite School of Field Natural History. The school, the first of its kind in the National Park Service, helped pave the way for educational endeavors in Yosemite and other parks — and is at the root of the Conservancy's present-day Outdoor Adventure programs. 

During a Yosemite Conservancy Outdoor Adventure, backpackers stay on a designated trail, one of the core principles of the "Leave No Trace" ethic. Photo: Yosemite Conservancy

Whether you're a seasoned adventurer or a first-time hiker, a few simple steps can help you minimize your impact on the natural world. Get ready for your next adventure in Yosemite with some basic "Leave No Trace" tips!

Yosemite rock-climber and author Doug Robinson brings visitors inside the sport in "Yosemite Exploration: Experience the Climbers' World."

Curious about climbing, but not ready to rope up? This weekend, expert rock-climber Doug Robinson is leading a one-day Outdoor Adventure to bring you inside the climbing experience — without leaving the ground! Read on for a sneak peek in the climbers' world.

Participants in a Yosemite Conservancy bird-watching Outdoor Adventure search for birds using binoculars.

How are you celebrating Great Outdoors Month? Get inspired to get outside with this peek at what one of our staff members saw - and heard - on the Conservancy's recent bird-watching Outdoor Adventure.