: Vertical erosion (downcutting) slows down while lateral (sideways) erosion becomes dominant, causing narrow V-shaped valleys to broaden into U-shaped ones.
: Rivers develop winding, "S" shaped curves (meanders) and may leave behind crescent-shaped bodies of water known as oxbow lakes. mature land
: A well-developed network of tributary streams efficiently drains the entire land mass. Contextual Variations : Vertical erosion (downcutting) slows down while lateral
"Mature land" typically refers to the , characterized by maximum topographical diversity and the development of broad river valleys. mature land
: Large, flat floodplains begin to form as rivers lose velocity and start to meander.