It may not be Kelso dunes but Kelso looks like a great place to ride!!
From my knowledge, the fine for trespassing on gov't/private property in CA is currently $250.00, and that's if the officer decides to ticket you. And of course if you get caught
I doubt you will get caught?? Since nobody rides there anymore, And if you do decide, it hasn't been a repetitive issue out there so you probably don't have much to worry about. B)
Just let me know how it goes!!!!!?