There was a sign at the entrance, next to the gate, telling us that nature came first and that the area was only open for pedestrians from sunrise to sunset. Many things weren't allowed, like motor vehicles, mopeds, bicycles, horses, dogs, camping, open fire, smoking, littering, making noise, and taking anything home from the area. Well, quite a lot but all very reasonable don't you think?
I'm linking to signs, signs.