To put up a fence to keep me out and to keep Mother Nature in?

Ok that's from "Signs" by Five Man Electrical Band and not Metallica, but now we have this story.

James Hetfield, co-founder of the legendary heavy metal band Metallica, has erected a barbed-wire fence on his property near San Rafael, cutting off a fire trail that has been open to public use for decades.

Now I'm as big a property rights defender as anyone, but if this is true, I would think the hikers/bikers/riders would have a reasonable claim that an easement by prescription had formed on the property.

Link via Matt Ryan.