You Can Help Clean-up Yosemite National Park During the 12th Annual Yosemite Facelift Beginning September 23, 2015 Details Last Updated: Sunday, 30 August 2015 14:32 Published: Sunday, 30 August 2015 14:32 View Comments August 30, 2015 - The 12th Annual Yosemite Facelift begins September 22, 2015. This is the time to clean-up Yosemite National Park from the summer trash before winters sets in. This event is an all volunteer clean-up of the park.For more information: Yosemite Climbing Association Facebook View the discussion thread. back to top