Free National Parks Day Coming Up On September 24th

09/16/2011 09:33 am ET | Updated Nov 16, 2011

WASHINGTON -- Another fee-free day is coming up at national parks.

The more than 100 national parks that usually charge entrance fees will waive admission on Sept. 24 in honor of National Public Lands Day. Many of those who visit parks on the day will take part in volunteer work such as building trails, collecting trash, removing invasive plants and other improvement projects.

National Public Lands Day began in 1994. Last year, more than 175,000 volunteers worked on 2,000 events at parks around the country.

Many national parks never charge an entrance fee but the list of those that normally charge for admission and are waiving fees for the day includes Grand Canyon in Arizona; Death Valley, Muir Woods, Joshua Tree, Sequoia and Yosemite in California; Mesa Verde and Rocky Mountain in Colorado; Everglades in Florida; Yellowstone in Wyoming, Montana and Idaho; Acadia in Maine; Antietam and Assateague in Maryland; Cape Cod in Massachusetts; Glacier and Little Bighorn in Montana; Carlsbad in New Mexico; Arches, Bryce, and Zion in Utah; Shenandoah in Virginia, and Grand Teton in Wyoming.

Fee waivers include entrance fees, some tour fees and transportation entrance fees. Reservation, camping and concession fees and other charges collected by third parties, including some tour fees, remain in effect.

Admission fees will also be waived Veterans Day weekend, Nov. 11-13.