Creelsboro Natural Bridge (more commonly referred to as Rock House or the Rockhouse) is a natural bridge in southwestern Russell County, Kentucky, United States. It is located near the community of Creelsboro, approximately downstream from Wolf Creek Dam, which impounds Lake Cumberland. The Rockhouse is classified as a meander natural bridge because it was created by river erosion of a cliff on the outer side of a sharp meander in the river. Jim Creek flows through it before merging into the Cumberland River. With a span of , it is the seventh largest natural bridge in the United States. History The Creelsboro Natural Bridge consists of Upper Ordovician Period silty dolomite of the Cumberland Formation. Unlike most natural bridges it is made of dolomite rather than sandstone. First discovered in 1770 by a group of hunters, Rockhouse is a popular site for camping. It was designated a National Natural Landmark by the U.S. National Park Service in 1987. It remains privately owned but is accessible by a short walk from KY 379. Immediately across the river in Clinton County is the private Rockhouse Trace. See also Kentucky Geological Survey References External links Creelsboro Natural Bridge Kentucky Geological Survey GQMAPS, S36 Natural arches of Kentucky National Natural Landmarks in Kentucky Landforms of Russell County, Kentucky