In Photos: Hiking the US’s National Trails

Photographer Bart Smith has been hiking the US’s national trails since 1992. Today he completes his 30th, the 3,700-mile Lewis and Clark trail, in time to celebrate the 50th anniversary of the National Trails System Act. We select some of his best images from 25 years of walking.

Check them out for more information and start to see our world through photos!