RIVER VALLEY FORMATION Crossword Clue
RIVER VALLEY FORMATION Crossword Clue
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Crossword Puzzle Infos
RIA is an acronym for River Valley Formation, which is the process of a river carving out a valley in the landscape. This process is caused by erosion and sediment deposition, which can occur over a long period of time. The result is a deep, wide valley with steep sides, often with a river running through it.