So, I was just curious to see what a pass to the National Park system might run. Seems a lot of them are bound to groups or individual parks. A few are near $100 for an annual pass.
... Apparently Veterans can get a lifetime pass for "Free" ($10USD processing fee) and get full access to anything maintain by the USGS including BLM land and national parks.
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I put in for it and am now waiting for the pass to get to me.
Always fun when you find something like that out. So if you served your country and got $10 laying around go ahead and do that.