|
The Lewis and Clark National Historic Trail includes many remarkable places, but some stand out as High Potential Historic Sites (HPHS)—locations identified in the National Trails System Act as offering exceptional opportunities to understand and interpret the Trail’s historic significance during its primary period of use from 1803–1806. To qualify as an HPHS, a site must first be directly connected to the expedition route and located on or near the Trail. It must also offer a meaningful way for visitors to learn about its importance, whether through existing interpretation or the potential for future educational experiences. Finally, qualifying sites must reflect at least one defining attribute: scenic quality, freedom from modern intrusion, historic remnants, or a strong sense of place. These characteristics help preserve the landscapes, features, and atmosphere described in the expedition journals—allowing visitors today to more fully connect with the footsteps of the Corps of Discovery. High Potential Historic Sites
The Park Atlas is an interactive map with geographic layers on Trail resources, visitor opportunities, and historic information.
Planning Documents |
 |
|
Last updated: September 22, 2026