Lava Falls, A Basalt Flow from the Plateau, 28.3 miles below Havasu Creek. The upper and lower lavas have no immediate relation to each other. Geology by R. C. Moore
Papers of Otis R. Marston: Still images, 1870-1978. vols. 56-104, Colorado River and tributaries (Grand Canyon to Gulf of California) The Otis Marston Colorado River Collection
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