Panoramic, aerial view of layered oil shale rock formations of the Roan Cliffs in Garfield County, Colorado. Shows Logan Wash in a valley near Mount Logan, the Colorado River, an extinct volcanic crater, and North Mamm Peak in the distance.
Oil-shales--Colorado--Garfield County--1930-1960.; Colorado River (Colo.-Mexico)--1930-1960.; Garfield County (Colo.)--1930-1960.; Logan Wash (Colo.)--1930-1960.; Logan, Mount (Garfield County, Colo.)--1930-1960.; North Mamm Peak...
[between 1930 and 1960?]
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