Salmon and trout are helped back to their spawning ground by a fish ladder at Bonneville Dam, Oregon.
Titles read: "FISH CLIMB - SALMON TRY US $7,550,000 LADDER".
Oregon, United States of America.
Various shots of the Bonneville Dam which has been equipped with special 'fish ladders' - rising steps of water that assist salmon and trout to get to their spawning ground. An official counts the number of fish coming through a gate at the top of the 'ladder'.