Bring It On!

This sign surprised me. When people plan to hike a trail in the woods in rugged rural Missouri nowadays, do they really need to be warned in writing that they might experience, like, "natural surfaces"? It must be a liability issue. But then it should warn of bugs, poison ivy and mushrooms too. How about rattlers and snapper turtles? How about squirrels that might pelt you with acorns? Why not just stay in your car and watch a DVD?