To ensure the well-being of our employees and the public, we are canceling or postponing many programs, events and operations. For details on our response to the COVID-19 pandemic, click here. Yosemite National Park is closed to all park visitors until further notice. See the Yosemite National Park site and the NPS Public Health Update for more information.

47° F

Experience Level



7-10 miles/day


8,600–10,000 feet

Registration Fee


Remarkable rock formations, including sheer cliffs, polished domes and soaring peaks, are among Yosemite’s most recognizable features — this unique landscape is one of the reasons the park is designated as a UNESCO World Heritage Site. 

On this guided weekend adventure, you’ll explore some of Yosemite’s famous features in the Tuolumne Meadows area with a park geology expert. During two day hikes, you’ll get the inside (and ancient) story of Yosemite’s peaks, domes and cliffs. Learn how glaciation has shaped the Sierra landscape, from the jagged nunataks that jutted out above the ice to the erratic boulders left behind when the glaciers melted. Bring your scientific curiosity and rock-related questions!

For a preview of the weekend, watch Yosemite Nature Notes: Granite, and read our blog post Glaciers on Granite.

Included with your registration: 

  • An introductory evening meeting at Parsons Memorial Lodge (Friday, August 28 at 6:30 pm) and two full-day hikes in Tuolumne Meadows (8 am to approximately 4 pm on Saturday, August 29 and Sunday, August 30, depending on the speed of the group).
  • Park entry (as needed).
  • Three nights of tent camping at Tuolumne Meadows Campground, if needed (arrive Friday, August 28 and depart Monday, August 31).
    • Note: Our limited campsites are for participants only. The sites are shared. Tents only. We cannot adjust the dates.
  • Option to upgrade to accommodations to Tuolumne Meadows Lodge for an additional fee (arrive Friday, August 28 and depart Monday, August 31).
    • Information about upgrading your accommodations will be emailed to you after you sign up. The option to upgrade expires 30 days before the start of the program. We cannot adjust the dates.

Please note:

  • There is no discount if you choose not to use our gate pass or campsites.
  • Participants must be physically fit and have experience hiking at high elevations. This adventure will require 6-8 miles of hiking each day.

View a suggested packing list.