In case you didn't know, you can buy a Interagency Annual pass at any of the national parks it is good for all the national parks or you can buy it online to at:
http://store.usgs.gov/pass
It is $80 and will get you into all the national parks and Federal Recreation areas that charge a fee. If you frequent areas like this, the pass pays for itself.
http://store.usgs.gov/pass
It is $80 and will get you into all the national parks and Federal Recreation areas that charge a fee. If you frequent areas like this, the pass pays for itself.