This Saturday, Sept. 24, is National Public Lands Day.
That means you can visit a national park for FREE -- more than 100 national sites are waiving their entrance fees for the day.
And, if you volunteer in one of those parks, you could earn a second free visit!
For more information about volunteering, a list of participating parks and information about the Worldwide Day Of Play, go to this helpful blog from Oh, Ranger! http://bit.ly/nbZNj1