Descriptive InformationOriginal Captions: Rock wall construction south of first tunnel on Newfound Gap Road. Rock Wall Construction; II-S-16118, Physical Facilities - Roads - Structures on roads (tunnels, trail underpass, box culverts, trestles).Rock wall construction south of first tunnel on Newfound Gap Road.Rock Wall Construction, II-S-16118, Physical Facilities - Roads - Structures on roads (tunnels, trail underpass, box culverts, trestles)