We just discovered that a lifetime pass to the national park system for senior citizens is currently $10. That’s right. $10. For life. Given how much this blog stresses the importance of exercise, and getting outside in general, we can hardly do other than strongly urge you to go spend that $10. Particularly since, it seems likely, a bill is about to enter congress set to raise that rate, in advance of the 100th anniversary of the national parks.