When you join one of our Outdoor Adventure or Custom Adventure programs, you’ll have quality time in the field with some of the most knowledgeable and talented naturalists guides, historians and artists in Yosemite. Collectively, they’ve hiked tens of thousands of miles in the park, won numerous awards, written dozens of books, and had their art or photographs published around the world. Our guides are excited to share their passion for Yosemite with you.