There is place in the high cascade in Washington also called the Moon Rocks. It too is a favorite among rock crawlers and dirt bikers.
They invited me along in the mid nineties when I had my first TW. They told me they would find room in back of one of their rigs to carry my TW when I failed to negotiate the trail.
I showed them all up the whole 2 days. Several of their machine had serious breakdown problems, but the Dub took it all in stride.