Some of the National Parks aren't charging entrance fees on September 25th.
Here's a link with all the information: http://www.nps.gov/findapark/feefreeparksbystate.htm
On a side note, renodesertfox I wanted to suggest CampingRoadTrip.com - http://www.campingroadtrip.com/ for your "helpful links" post.
Here's a link with all the information: http://www.nps.gov/findapark/feefreeparksbystate.htm
On a side note, renodesertfox I wanted to suggest CampingRoadTrip.com - http://www.campingroadtrip.com/ for your "helpful links" post.