At first he started at Monticello.
"On the Morning of Friday, May 14, 1999, I began my westward retracing of the Lewis and Clark route from St. Louis to the Pacific Ocean in my Christen A-1 Husky, a single-engine, high-wing, bush-type airplane. The day marked the 195th anniversary of the departure of the Corps of Discovery from this point. I had spent five months planning and plotting the route, and I had entered geographic coordinates of known Corps of Discovery campsites and points of interest into the airplane's Global Positioning System (GPS). I also entered many potential camping sites. The nights spent camping with my airplane are treasured times, and I put much thought into selecting locations."
He finished at Camp Disappointment .
"On 26 July 1806, Lewis and his men left Camp Disappointment and headed for the mouth of theMarias River, where they planned to rendezvous with the rest of their contingent. After about seventeen miles, riding on the south (right) side of the Two Medicine River, Lewis spied eight young Indians "on the top of an eminence" — Flag Butte, the highest point on the ridge above the river in the photograph. The encounter was unwelcome, though not unexpected. Soon, however, Lewis concluded that the Indian boys “were more allarmed at this accedental interview" than he and his own men were. Lewis assumed they were the dreaded Atsinas, "Minnetarees of Fort de Prarie," but they probably were Piegan Blackfeet."
