Author and engineer Ted S. Hall is pretty sure he has walked in the tracks of Lewis and Clark.

The explorers came through the Bitterroot Valley in 1805 on their way to the Pacific Coast, and William Clark came back through the area on their way back to St. Louis. However, how the group first crossed Lost Trail Pass has been a question for years.

Ted S. Hall became intrigued with the mystery and painstakingly followed the recorded path from Clark Canyon Reservoir into Idaho and back into Montana. Using the actual notes and compass headings from Capt. William Clark, Hall walked the route, matching map details with landscape features.

Clark's work in the rest of the mapping has been praised. And Hall, in a recent presentation to the Como Schoolhouse Corp., said the area mapped around Lost Trail Pass is also accurate.

One section of Lewis and Clark's path runs from Lost Trail Ski Area to Indian Trees Campground in the south end of the Bitterroot Valley. Hall and others would like to see that turned into an interpretive trail by the Bitterroot National Forest. He and publisher Dale Burke will be working such a proposal.

Hall's book, "Between the Rivers," is published by Burke's publishing company, Stoneydale Press.