Prior to exploration and settlement by European immigrants, the Native Americans of the areamainly the Lakota Siouxwould refer to this formation by a term which meant "elk penis". The first non-natives to see the pillar were probably the Astorians of Robert Stuart in their eastward journey from the Pacific Ocean in 1813. Chimney Rock was recorded in many journals after the Stuart expedition. The name "Chimney Rock" probably originated from early fur traders. The first recorded mention of "Chimney Rock" was in 1827 by Joshua Pilcher. Pilcher had journeyed up the Platte River valley to the Salt Lakerendezvous of the Rocky Mountainfur trappers. The formation went through a variety of names before becoming Chimney Rock such as Chimley Rock and Chimney Tower, as well as euphemisms based on the original Native American name, such as Elk's Peak and Elk Brick. A small town named Chimney Rock once stood near the base of the formation. A post office was established at the town of Chimney Rock in 1913, and remained in operation until 1922. Based on sketches, paintings, written accounts, and the 1897 photograph by Darton, Chimney Rock was taller when it was first seen by settlers, but has since been reduced in height by erosion and lightning.
Geology
Chimney Rock consists primarily of Brule clay interlayered with volcanic ash and Arikaree sandstone. The harder sandstone layers near the top have protected the pillar since it broke away from the retreating cliff line to the south. Chimney Rock rises approximately above its surroundings.
Today
Chimney Rock was designated a National Historic Site on August 9, 1956, and is a National Park Service designated area, though it is maintained and administered by History Nebraska. Chimney Rock and Independence Rock further west in Wyoming are two of the prominent features along the Oregon Trail. Chimney Rock is located 20 miles southeast of Scotts Bluff National Monument, on Nebraska Highway 92. The Ethel and Christopher J. Abbot Visitor Center features museum exhibits and a video about pioneers and the migrations in the West, as well as a gift shop. On March 1, 2006, the Nebraska State Quarter was released. The quarter features a covered wagon headed west past Chimney Rock, commemorating Nebraska's role in westward migration.