77° F
Toggle Menu

Experience Level



4-5 miles


4,000 feet

Registration Fee


Program Overview: Yosemite Valley’s remarkable rock formations are among the park’s most recognizable features. On this guided adventure, explore the ancient forces that created icons like Half Dome, Glacier Point, El Captain and much more with National Park Service Geologist Dr. Greg Stock. He’ll give you the inside story of Yosemite’s peaks, domes, and cliffs — including how glaciation sculpted Yosemite Valley’s massive cliffs and how rockfalls continue to shape them. Bring your scientific curiosity and rock-related questions!

Know Before You Go:

  • Program date: Friday, April 19, 9am-5pm
  • Program location: Yosemite Valley
  • What’s included: One full day of guided instruction by Yosemite National Park Geologist Greg Stock, PhD; park entry (as needed); and shared tent camping (camping dates cannot be altered). There is no discount if you choose not to use the included gate pass or campsite.
  • Camping dates: Participants can arrive on April 18 after 12pm and must depart April 21 by 11am. There are two shared campsites among all the participants. We guarantee tent camping only. If you choose to bring a recreational vehicle, we cannot guarantee you will have a parking spot. Please be prepared to tent camp. A picnic table, bear locker, and fire pit are provided at each site. Campsites fit 6 people per site.
  • Campground Location: Upper Pines in Yosemite Valley
  • Lodging: No upgrades available for this program
  • Experience level: All levels welcome.

*This one-day program includes three nights of camping. Make the most your trip by enjoying an extra free day, April 20th, to explore on your own before checking out April 21st.

What’s not included:

  • Gear or meals during your program.
  • Camping gear or meals in the shared campsites.
  • Transportation.

View a suggested packing list.