(Undated) — Two Utah campgrounds are being ranked among the hardest to book in the United States. Camping website The Dyrt looked at the availability of campsites around the country and ranked them by how hard it is to get a reservation. Fruita Campground at Capitol Reef National Park was ranked fourth on the list, being fully booked nearly 98-percent of the year. South Campground at Zion National Park ranked fifth, also being fully booked nearly 98-percent of the year. Two campgrounds at Yellowstone National Park in Wyoming topped the list by being fully booked year-round.