Construction, beginning new road to picnic area and cabins by NP-1 and NP-4, 1940
Mammoth Cave National Park; National Park Service
Construction, beginning new road to picnic area and cabins by NP-1 and NP-4, 1940
Mammoth Cave National Park; National Park Service
Construction, using tractor and scraper to grade and fill on new campground and picnic road, 1939
Mammoth Cave National Park; National Park Service
Construction, showing width of road and how banks are being sloped, north of river on Echo River Road, 1938
Mammoth Cave National Park; National Park Service
Construction, using shovel and trucks to make large cut in Echo River Road near Green River, south of river, 1939
Mammoth Cave National Park; National Park Service
Construction, using shovel and grader at new entrance hotel road to move surface of old road, road is to be widened, 1939
Mammoth Cave National Park; National Park Service
