...that most of nature is open 24 hours a day? Privately-owned forests are no place for night-owls though, and are closed from sunset until 6am.
...that you are free to fill your brown-bag with berries, mushrooms or other wilderness delicacies?
In state-owned natural areas you may forage everywhere, but in privately-owned forests you may only pick what you can reach from the road or path. On beaches you may collect what fits in your hands.