August 14 Valentine to Cedar Rapids (511/10299 mi) - Now following US 20, at 3365 miles (5415 km) the longest road in the United States, through Nebraska, we pass through the low rolling Sandhills. The hills are Pleistocene sand dunes, derived from glacial outwash eroded from the Rockies and carried by winds sweeping south off vast continental ice sheets.
All images copyright © 2016 F.W. Vollmer and may not be used without permission.