In 1957 when Eisenhower's Defense highway System was being built to connect the whole nation, only one route was designed from Salt Lake City, Utah to Denver, Colorado. In the 60s another highway was suggested as a second route that would take the freeway right through the middle of the San Rafael Swell. The name, by then, was changed to the Interstate Highway system, and this new route was designated as Interstate 70. This photograph shows surveyors in Spotted Wolf Canyon, where a natural opening of a few feet was widened to accommodate a four lane road.
