Challenge Cost Share Program (CCSP) Through the CCSP, the NPS and partners work together to preserve the Trail. more...
Site Certification More than 120 certified sites are found along the Trail. Learn more about site certification. more...
Did You Know?
Twenty years before the Lewis and Clark Expedition, Thomas Jefferson hoped to mount the “Clark Expedition.” In 1783, Jefferson asked William Clark’s brother and Revolutionary War hero, George Rogers Clark, to lead a cross country expedition to explore the west. Clark declined the offer.