Wow check out this amazing time lapse footage of the Ucayali River (Rio Ucayali) in Peru. If you look at the top of the image you can see the meanders becoming more and sinuous until on ox-bow lake is formed to the east and then to the west of the river, each one filling in to become a meander scar. As soon as the bends are cut off and the river becomes slightly straighter, the asymmetrical erosion immediately starts to make the river bend once again.
