Brian, I have a bp friend who lives in Sac, she loves Lassen VNP, due to health issues she only does some car camping now. When she does a carcamp trip there and sends out invites, she has a good turnout. In Jan/Feb this year, about 10 of us went, had a great time partying in the parking lot by the new visitor center that replaced the chalet. We even went for a short dayhike to the Sulphur Works a half mile up the closed road. Park officials let us be, we behaved, being 30-50 somethings.