Las Vegas Sun - Photograph : 0605Sculp3

December 11, 2017

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Stratification is seen in the sides of "Double Negative," which was dug, drilled and dynamited by Bryant Robison and two other men under Heizer's direction.

Sam Morris

Stratification is seen in the sides of "Double Negative," which was dug, drilled and dynamited by Bryant Robison and two other men under Heizer's direction.