I did try this:
If you take highway 105 south until Dakan road, then head west. You'll eventually get into the mountains and there's some decent areas to flex a little.
and didn't get too far. Sign at 105 said closed 6mi ahead and I think it was only 4 before I hit two fences with gates and appeared they didn't want anything going in there. Just figured I would tell you in case someone else tries it.