Unlike most campgrounds in Central Oregon, Pringle Falls Campground is a quiet and isolated campground most people have never heard of. It can be pretty easy to discover why once you arrive: It is a small campground with nothing really interesting nearby, and no amenities to speak of besides a single vault toilet. Despite the small Wild River subdivision of La Pine being next to it (although fortunately not visible from the campground itself), it is also in the middle of nowhere, being roughly halfway from either US-97 or any of the popular Cascade Lakes. As a result, you are likely to be the only one camping here on any given night if you do so.
Despite the name, Pringle Falls are not viewable from the campground. Pringle Falls are actually the rapids under the bridge on Burgess Road, and they are not very well marked, despite signs on Century Drive and on Cascade Lakes Highway as far away as Bend guiding you to it. There are no trails to Pringle Falls from the campground itself, and you will have to return back to Burgess Road to see them. In addition, there are no riverfront campsites, which makes the nearby Wyeth Campground a more appealing option; the river is much more visible from all areas of that campground.