Went in the Palisades side. Took a wrong turn and ended up tackling some hills that were obviously meant for dirt bikes. Not what I had in mind, but the kids in the back thought it was a blast. Here's some video of one particularly steep part that, of course, doesn't look nearly as bad as it did in person.
20171104_104910.mp4
Once in the park we explored for a couple hours under the theory that "no signs means no problem." So, we opened a couple gates and drove around. That was easily the best part of the trip. Some of those roads haven't been touched in a long time and the views are stunning.