Well, the one side that people mainly rode (Chalks bluff) is owned my Hansen brothers and they closed it down because the parties and stuff were getting out of control. There was a kid that drove his truck off of a cliff and killed himself. Also, they have an event there every year called winter fun fest and, people were just making a huge mess and not cleaning it up. So, they got fed up with it and closed it down. Now the Sheriff will go down there and look for people on the property and cite them out for tresspassing. Then, the other side (buckeye) is still open from what I have heard but the riding is not nearly as good.
A lot of people still go down there and ride. I just have not been in a while. We normally go ride the Yuba County gold fields now. It is also closed but the Sheriff never goes out there.