It take two at Lone Rock Campground, two legs or two wheels thats is! Only accessible by bike, foot, or boat you could make a mini adventure out of this one. As the smallest campground on the Union Valley Reservoir, you can expect close quarters. There isn’t much privacy, but there is spectacular views. Why not share! Park at Jones for a short walk, or bike to the campground and venture off during the day on the 5.8 miles of trail offered. Upon your return stick the camp chairs in the shore as you watch the clouds pass through the sunset and rest those tired legs.