As posted on the nps.gov site, "America’s Best Idea – the national parks – gets even better this summer with three fee-free weekends at more than 100 national parks that usually charge entrance fees.
Mark your calendars for fee-free weekends this summer:
June 20-21, 2009 (Father’s Day weekend)
July 18-19, 2009
August 15-16, 2009
Visit http://www.nps.gov/findapark/feefreeparks.htm to reserve your camping spot now!
Here’s a tip – many national parks never charge an entrance fee, so you can plan inexpensive visits year round!