Starting Wednesday, hundreds of volunteers will be picking up trash in Yosemite National Park. It's the 15th annual "Facelift," designed to clear a summer's-worth of litter from one of the most beautiful places on earth.
Every year Yosemite National Park sees about four million visitors.
Many of them leave litter behind them.
Last year, 1,600 volunteers collected 14,000 pounds of trash from the Yosemite Valley, along hiking trails, and Tuolumne Meadows.
Yosemite Park Ranger Scott Gediman says things people leave behind always amaze him.
"You know every year I'm surprised by the things I find, I find discarded hats, socks, flip flops, all kinds of stuff for whatever reason people just throw out."
Gediman says even cleanup volunteers will have to pay an entry fee at Yosemite except on Saturday. That's National Public Lands Day and admission is free.
The cleanup goes through Sunday and signup stations are located throughout the park.