LUNAR VALLEYS Crossword Clue
LUNAR VALLEYS Crossword Clue
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                    Crossword Puzzle Infos
                            
                                Lunar valleys, also known as rilles, are long, narrow depressions found on the surface of the moon. They are believed to have been formed by volcanic activity or tectonic forces. Rilles can range in size from a few meters to hundreds of kilometers in length and can be up to several kilometers deep. They are often associated with other features such as lava tubes, domes, and craters.