After the big quake in 1906 people lived in tents at that park for months. I'm sure it's been detected A lot over the years, but I'm sure there has got to be A few goodies left. Go slow and good luck.
Keith
Good luck in the park.
I have a tect'n buddy down there that said they were throwing detectorist out.
Some one was probably leaving a mess or holes open and P'd them off.
Anyway go low and slow.. there is still some good stuff there.