Chimney Rock is a prominent geological formation located in western Nebraska, USA. It rises about 325 feet above the North Platte River and is part of the Oregon Trail, serving as a landmark for pioneers traveling westward in the 19th century. The rock is composed of soft sandstone and is known for its distinctive spire shape. Today, Chimney Rock is a popular tourist destination and is part of the Chimney Rock National Historic Site. Visitors can explore the surrounding area, learn about its history, and enjoy scenic views. The site also features a visitor center that provides educational resources about the Oregon Trail and the pioneers who passed through the region.