Wilderness Landscape & Natural Heritage
Spirit Mound Historic Prairie stands as an important cultural and natural testament in South Dakota, offering visitors a glimpse into the past as well as a chance to explore restored prairie ecosystems. This site is significant due to its connection to the Lewis and Clark Expedition, during which the explorers visited the mound on August 25, 1804, drawn by Native American legends of 'spirits' inhabiting the hill. The area encompasses approximately 320 acres of once-cultivated land that has been carefully returned to native prairie, featuring a diversity of grasses and wildflowers. The mound offers a striking view of the surrounding landscapes, providing a sense of the undisturbed Great Plains as Lewis and Clark would have experienced. Visitors can enjoy various walking trails with interpretive signs that highlight both the natural and cultural history. The site serves as a valuable educational resource, illustrating the balance between preservation and public enjoyment.