This photo was actually taken in Idaho at a state park that celebrates a dangerous but important crossing for the emigrants heading West.
" A perilous ford at Three Island Crossing was a formidable Oregon Trail barrier. For those who could not cross here faced a long, more difficult southern route.
No other ford between Missouri and Oregon troubled them so much. This was their largest river. Using 2 of 3 islands, they crossed 3 channels, but sometimes lost stock and wagons. Many emigrants depended on Shoshoni Indian guides to get them across safely."
(from information sign at the park)
This Connestoga wagon was donated by a family in honor of all the pioneers who survived and perished making this crossing.