This campground in Theodore Roosevelt National Park near Medora ND has 76 sites. Half of the sites, the even-numbered ones, are not reservable. Sites 55-66 are walk in tent sites; parking spots and grills for these sites are numbered so you have a specific site.

We arrived before 10:30 am on a Sunday and sites were being claimed quickly. There were 7 of us choosing sites at that time. The hosts had a whiteboard that listed available sites; we took a photo of the list and chose quickly as we drove around because sites that were listed as available were already being claimed. We ended up on a reservable site that was open for the next several nights. The host couple was really on the ball and their attention helped keep the site selection process orderly.  After you put your tag up, they fold it over later in the day and mark your departure date. This is a practice that is used in many campgrounds.

Cottonwood has been full every day since Memorial Day so you can't show up in the evening or possibly even mid-afternoon and expect to find an open site.

This campground has no hookups but has flush toilets, sinks, potable water spigots, a sink for washing dishes/disposing of grey water, a place for filling water tanks, trash disposal and firewood for sale. There are charcoal grates for cooking that can also be use for campfires, but there are no fire rings; your campfire will be a few feet off the ground in something that I think of as a grill!

Showers? No, but there area couple campgrounds in Medora that have showers for $5.

If you stay here, you're obviously here to see Theodore Roosevelt NP. Both the campground and park are worth a visit. The scenery is incredible and gave us a new view of North Dakota. There is a hike near Pleasant Valley Ranch where you can use a few trails to make a 5+ mile loop that will show you everything the park has to offer - Little Missouri River (and you have to cross it at the beginning and end), prairie dog towns, bison herds and beautiful scenery. I highly recommend this as a way to see the park from a better vantage point than the highway.

One complaint - the position of our site (#19) had some people think it was acceptable to cut through our site on their way to the bathroom. Do you walk through someone's home to shorten your walk? Didn't think so but 3 people did within 30 minutes.