Sinkhole in Houchins Valley on Garvin tract, 1936
Mammoth Cave National Park; National Park Service
Sinkhole in Houchins Valley, Garvin tract, 1936
Mammoth Cave National Park; National Park Service
Sinking Spring with stone steps and retaining wall, created by the War Department, near Hodgenville, Kentucky
Abraham Lincoln Birthplace National Historical Park
Sinking Spring with stone wall around, near Hodgenville, Kentucky
Abraham Lincoln Birthplace National Historical Park
Small man-made spring, Cosby Knob, Tennessee
Great Smoky Mountains National Park
Spring at Cosby Knob Shelter, II-B-(4)-TS-3606, Physical Facilities - Buildings - Visitor use buildings - Trail Shelters
Spring after being completed with a concrete wall, see no 845 and 846
Mammoth Cave National Park; National Park Service
Spring after being completed with a concrete wall, see no 845 and 846
Mammoth Cave National Park; National Park Service
Spring after being walled in with concrete, the work was done by np-3
Mammoth Cave National Park; National Park Service
Spring on tract # 272 St Demumbrun project, superintendents Allison and Martin
Mammoth Cave National Park; National Park Service
Spring, Shenandoah National Park, Virginia
Kings Mountain National Military Park
Shenandoah National Park Spring Glides Upward Photo by Chapple
Spring, Shenandoah National Park, Virginia
Kings Mountain National Military Park
Spring A.T. Big Meadows Sheet. Nat'l. Pk
Spring, Stony Man Summit and Skyline Drive, Shenandoah National Park, Virginia
Kings Mountain National Military Park
Stony man Mmt & skyline drive in spring
Springs on meinton near commission property on waters of west Buffalo Creek, park engineer Miller
Mammoth Cave National Park; National Park Service
Surveys of springs in the Colorado River drainage in Arches National Park, Canyonlands National Park, Glen Canyon National Recreation Area, and Grand Canyon National Park; Part I
National Park Service Water Resources Division; National Park Service
Typical erosion near Good Spring church, 1937
Mammoth Cave National Park; National Park Service
View of Big Spring, the water is slightly muddy, Mammoth Cave National Park, by Willis King, 1937
Mammoth Cave National Park; National Park Service
Water quality of the Current, Jack's Fork, Eleven Point, Little Black and Warm Fork of Spring River Basins of Missouri
National Park Service Water Resources Division; National Park Service
Waterline that goes from spring to hotel at Mammoth Cave
Mammoth Cave National Park; National Park Service
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