Chimney Rock, viewed from the east (Darton, 1897
had journeyed up the Platte River valley to the Salt Lake rendezvous of the Rocky Mountain fur trappers.
The Chimney name came from the Brule clay column that stands 4,226 feet above sea level. The rock is also composed of volcanic ash and sandstone, which has significantly weathered away over the past couple of centuries.
Chimney Rock has been designated a National Historic Site and is today administrated as an "affiliated area" by the National Park Service in cooperation with the Nebraska State Historical Society. Chimney Rock and Independence Rock further west are probably the most famous features along the Oregon Trail.