We stayed in the Craters Of The Moon National Park a few years ago with the 2955RL. As mentioned above most of the sites are very tight for a Monty. We were lucky and got a good open site. It would be worth checking out the park for a site.
Be careful pulling around the roads in the park. There are places with the volcanic rock close to the side of the road.
Nice little place to see.
Link:
Our Site
Joe