Good mushrooming spots are like good fishing spots...
Keep it secret, keep it safe!
There are a lot of things people keep secret so it will not be decimated.
There is a guy in Oregon that collects Lady Bugs every year.
He collects more than all the other people collect combined.
He has been followed and someone even put a GPS tracker on his truck.
Last I read he was still the only person that knows his secret location.