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Experience Level



4-5 miles/day


4,000 feet

Registration Fee


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 Greg Stock. He’ll give you the inside story of Yosemite’s peaks, domes and cliffs — including how glaciation shaped the Sierra landscape, forming jagged nunataks that jutted out above the ice, and the erratic boulders left behind when the climate slowly shifted. Bring your scientific curiosity and rock-related questions!

Know Before You Go
When: Friday, March 25, 9 am to around 5 pm.
Where: Yosemite Valley
Registration includes: Guided day program, park entry (as needed), and two nights of tent camping at a shared campsite in Yosemite Valley (March 24, and 25). There is no discount if you choose not to use the included gate pass or campsite.
Lodging: Tent camping (included, dates cannot be adjusted) or upgrade to Yosemite Valley Lodge for an additional fee.
Experience level: No experience necessary!

View a suggested packing list.

COVID-19: We have implemented special safety measures to keep participants and instructors safe during the ongoing pandemic. Please review our COVID-19 procedures for details.