In the spring of 1925 in Jackson Hole, WY, about 37 million m³ of moisture-laden soil and rock moved down one side of the canyon and surge up the other side. This is an example of a(n)

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The description best fits an earthflow, where soil and rock move downslope due to saturation and liquefaction of the material. A rotational slide involves movement along a curved surface, a slump involves movement along a curved or planar surface, and a rockfall involves the free fall of rocks.

In the Spring of 1925 in Jackson Hole, WY, About