Taken off of the Historic Columbia Highway, near Multnomah Falls.
Lewis & Clark documented their travels well, including their trek through the Columbia Gorge. I remember studying them in my childhood days, but want to learn more about their grand expedition out West. I found an excellent web site called "Discovering Lewis and Clark". As a web developer, I have to give it two thumbs up. The site is well designed, and provides snapshots of their expedition (even aerial photographs) and their journals. Check it out!
For those Lewis & Clark afficionados, Powells Books in downtown Portland offers a huge selection of books about them. They are the hometown favorite! You don't have to travel to Portland to find the books. They are also offered online!