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Trench at Las Vegas Valley Big Dig

Detailed Description

Photograph from inside of one of the trenches as it appeared shortly after excavation during the Big Dig of 1962-63. Ten trenches totaling more than 2.13 km in length were excavated, including Trench K, which itself was more than a kilometer long! USGS scientists continue to refine the geologic and chronologic frameworks that Dr. Haynes established. (Photograph courtesy of the San Bernardino County Museum.)