Roads interior to the park are gravel and are generally in poor condition. A large MH or 5th wheel would have problems navigating them. Of all the sites available, only two would work for a 30' motorhome and those are tight. This park is beautiful - sites are heavily wooded with Birch and pine. The beach, which opens on to the Lake of the Woods, is to die for! It has a marvelous natural sandy beach and wonderful wading in the lake - best I've seen. This park is very under utilized. Perhaps because it has no electricity or flush toilets, perhaps because it is so isolated, or perhaps because the roads are so bad, but on a Friday-Saturday stay, we were the ONLY ones in the entire Birch Campground. There is no cell phone or Blackberry coverage here at all. The Ranger advised us not to drive our MH into the Lady Slipper Campground (too tight). We camped here in a Motorhome.