Southern California. Open year round. No permits or anything needed.
pics are 2012 Rubicon with 38.5x15 Boggers running 6 psi.
At 6,500 feet elevation, as the snow started to get more than a few inches thick, there were a few steep hills with some old tracks in the snow and everyone else having turned around, it was all virgin snow, without a track in sight.
After a 10 minute run at 6,500 rpm I started to overheat, even running the heater on full blast. The computer started dropping my rpm incrementally, 6,000, 5,500, 5,000 and when I was down to about 4,500 rpm, I got to a spot that was flat enough that I could get my rig moving again, so I stopped and let it idle until it was cool again.
After a few stops to cut out fallen trees across the road and more 6,500 rpm runs, I made it to the top and started to go down the backside towards Weldon. When I got to the signs that pointed towards Bodfish and Lake Isabella, I realized I missed the fire trail that goes to the Peak of Paiute Mountain, so I headed back.
On that last fire trail, about a quater mile from the peak, the snow was so deep that my bumper was plowing snow and I could't make it all the way to the top. My last tracks were 30" from the snow surface to tread marks, but it was still packed snow without any dirt to be seen.
Goodyear Wrangler MTR's clogged up with snow. He did eventually get himself out of this mess. What you can't see is that it's at the edge of the trail with a scary downhill slope. I was very impressed by his skills!