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Alluvial fan
A fan-shaped deposit of sediment found at ground level where a mountain river meets a flat valley or plain.

Alluvial fan
©Dean Bergmann
Word of the day
Ruperts Land >> The name of the land that was granted to the Hudson's Bay Company in the 1600s by Charles II. It was what is now Manitoba, Saskatchewan, Yukon, Alberta and some of the Northwest Territories.