The Senior US Park Pass is going from 20 dollars to 80 dollars after tomorrow. You can do it online or post mark by tomorrow.. Just giving Us Seniors notice....
I got mine on vacation at Hana, HI, back in 2005. This past week while getting in position to see the solar eclipse which came through Southern Illinois, I stopped by the Shawnee National Forest office and they said it was a lifetime pass. Crab Orchard National Wildlife Refuge gave it the thumps up as well. It's a good thing to have. You never know when you'll need it.
Got mine two weeks ago, $10 and a great deal !